BuzzSec

A Brazilian tech firm that specializes in protecting networks from distributed denial-of-service (DDoS) attacks has been enabling a botnet responsible for an extended campaign of massive DDoS attacks against other network operators in Brazil, KrebsOnSecurity has learned. The firm’s chief executive says the malicious activity resulted from a security breach and was likely the work of a competitor trying to tarnish his company’s public image. An Archer AX21 router from TP-Link. Image: tp-link.com. For the past several years, security experts have tracked a series of massive DDoS attacks originating from Brazil and solely targeting Brazilian ISPs. Until recently, it was less than clear who or what was behind these digital sieges. That changed earlier this month when a trusted source who asked to remain anonymous shared a curious file archive that was exposed in an open directory online. The exposed archive contained several Portuguese-language malicious programs written in Python. It...

The internet is noisy this week. We are seeing some wild new tactics, like people using fake cell towers to send scam texts, while some developers are accidentally downloading tools that peek into their private files during a simple install. It is definitely a busy time to be online. Security is always a moving target. Millions of servers are currently sitting online without any passwords, and from The Hacker News https://thehackernews.com/2026/04/threatsday-bulletin-sms-blaster-busts.html

The biggest challenge in email security today isn’t just detecting a threat; it’s the speed of response across a global landscape. As we head into the second half of 2026, the stakes with speed have gotten higher. According to SQ Magazine, AI-generated phishing attempts are 68% harder to detect than they were just a year ago, and the average cost of an AI-powered breach has climbed to $5.72 million. from KnowBe4 Blog https://blog.knowbe4.com/global-human-network-closes-email-detection-gap

Intro A sophisticated, high-resilience malicious campaign was identified by Atos Threat Research Center (TRC) in March 2026. This operation specifically targets the high-privilege professional accounts of enterprise administrators, DevOps engineers, and security analysts by impersonating administrative utilities they rely on for daily operations. By integrating Search Engine Order (SEO) from The Hacker News https://thehackernews.com/2026/04/etherrat-distribution-spoofing.html

Researchers have reverse-engineered a piece of malware named Fast16. It’s almost certainly state-sponsored, probably US in origin, and was deployed against Iran years before Stuxnet: “…the Fast16 malware was designed to carry out the most subtle form of sabotage ever seen in an in-the-wild malware tool: By automatically spreading across networks and then silently manipulating computation processes in certain software applications that perform high-precision mathematical calculations and simulate physical phenomena, Fast16 can alter the results of those programs to cause failures that range from faulty research results to catastrophic damage to real-world equipment.” Another news article . Lots of interesting details at the links. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/fast16-malware.html

Cybersecurity researchers have disclosed details of a Linux local privilege escalation (LPE) flaw that could allow an unprivileged local user to obtain root. The high-severity vulnerability tracked as CVE-2026-31431 (CVSS score: 7.8) has been codenamed Copy Fail by Xint.io and Theori. "An unprivileged local user can write four controlled bytes into the page cache of any readable file on a Linux from The Hacker News https://thehackernews.com/2026/04/new-linux-copy-fail-vulnerability.html

Cybersecurity researchers have discovered malicious code in an npm package after a malicious package as a dependency to the project by Anthropic's Claude Opus large language model (LLM). The package in question is "@validate-sdk/v2," which is listed on npm as a utility software development kit (SDK) for hashing, validation, encoding/decoding, and secure random generation. However, its real from The Hacker News https://thehackernews.com/2026/04/new-wave-of-dprk-attacks-uses-ai.html

This blog will not dive too deeply into BloodHound itself; instead, we will focus on various methods to collect AD data to provide BloodHound as input. The post A Practical Guide to BloodHound Data Collection appeared first on Black Hills Information Security, Inc. . from Black Hills Information Security, Inc. https://www.blackhillsinfosec.com/bloodhound-data-collection/

In February 2026, researchers uncovered a shift that completely changed the game: threat actors are now using custom AI setups to automate attacks directly into the kill chain. We aren't just talking about AI writing better phishing emails anymore. We’re talking about autonomous agents mapping Active Directory and seizing Domain Admin credentials in minutes. The problem? Most defensive workflows from The Hacker News https://thehackernews.com/2026/04/webinar-how-to-automate-exposure.html

A phishing campaign is targeting senior executives with social engineering attacks conducted over Microsoft Teams, according to researchers at ReliaQuest. The researchers believe former associates of the Black Basta criminal gang are running this operation. from KnowBe4 Blog https://blog.knowbe4.com/phishing-attacks-target-executives-via-microsoft-teams

Every security team has a version of the same story. The quarter ends with hundreds of vulnerabilities closed. The dashboards are bursting with green. Then someone in a leadership meeting asks: "So, are we actually safer now?" Crickets. The room goes quiet because an honest answer requires context – which is something that patch counts and CVSS scores were never designed to provide. Exposure from The Hacker News https://thehackernews.com/2026/04/what-to-look-for-in-exposure-management.html

cPanel has released security updates to address a security issue impacting various authentication paths that could allow an attacker to obtain access to the control panel software. The problem affects all currently supported versions, according to an alert released by cPanel on Tuesday. The issue has been addressed in the following versions - 11.110.0.97 11.118.0.63 11.126.0.54 11.132.0.29 from The Hacker News https://thehackernews.com/2026/04/critical-cpanel-authentication.html

That’s a lot . No, it’s an extraordinary number: Since February, the Firefox team has been working around the clock using frontier AI models to find and fix latent security vulnerabilities in the browser. We wrote previously about our collaboration with Anthropic to scan Firefox with Opus 4.6, which led to fixes for 22 security-sensitive bugs in Firefox 148. As part of our continued collaboration with Anthropic, we had the opportunity to apply an early version of Claude Mythos Preview to Firefox. This week’s release of Firefox 150 includes fixes for 271 vulnerabilities identified during this initial evaluation. As these capabilities reach the hands of more defenders, many other teams are now experiencing the same vertigo we did when the findings first came into focus. For a hardened target, just one such bug would have been red-alert in 2025, and so many at once makes you stop to wonder whether it’s even possible to keep up. Our experience is a hopeful one for teams who shake off ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added two security flaws impacting ConnectWise ScreenConnect and Microsoft Windows to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities are listed below - CVE-2024-1708 (CVSS score: 8.4) - A path traversal vulnerability in  ConnectWise ScreenConnect from The Hacker News https://thehackernews.com/2026/04/cisa-adds-actively-exploited.html

A cybercrime group of Brazilian origin has resurfaced after more than three years to orchestrate a campaign that targets Minecraft players with a new stealer called LofyStealer (aka GrabBot). "The malware disguises itself as a Minecraft hack called 'Slinky,'" Brazil-based cybersecurity company ZenoX said in a technical report. "It uses the official game icon to induce voluntary execution, from The Hacker News https://thehackernews.com/2026/04/brazilian-lofygang-resurfaces-after.html

Every security program is betting on the same assumption: once a system is connected, the problem is solved. Open a ticket, stand up a gateway, push the data through. Done. That assumption is wrong. It is also a major reason Zero Trust programs stall. New research my team just published puts numbers on it. The Cyber360: Defending the Digital Battlespace report, based on a survey of 500 security from The Hacker News https://thehackernews.com/2026/04/why-secure-data-movement-is-zero-trust.html

Cybersecurity researchers have disclosed details of a critical security flaw impacting LeRobot, Hugging Face's open-source robotics platform with nearly 24,000 GitHub stars, that could be exploited to achieve remote code execution. The vulnerability in question is CVE-2026-25874 (CVSS score: 9.3), which has been described as a case of untrusted data deserialization stemming from the use of the from The Hacker News https://thehackernews.com/2026/04/critical-cve-2026-25874-leaves-hugging.html

Two weeks ago, Anthropic announced that its new model, Claude Mythos Preview, can autonomously find and weaponize software vulnerabilities, turning them into working exploits without expert guidance. These were vulnerabilities in key software like operating systems and internet infrastructure that thousands of software developers working on those systems failed to find. This capability will have major security implications, compromising the devices and services we use every day. As a result, Anthropic is not releasing the model to the general public, but instead to a limited number of companies. The news rocked the internet security community. There were few details in Anthropic’s announcement, angering many observers. Some speculate that Anthropic doesn’t have the GPUs to run the thing, and that cybersecurity was the excuse to limit its release. Others argue Anthropic is holding to its AI safety mission. There’s hype and counter hype , reality and marketing. It’s a lot to so...

When patching isn’t fast enough, NDR helps contain the next era of threats. If you’ve been tracking advancements in AI, you know the exploit window, the short buffer that organizations relied on to patch and protect after a vulnerability disclosure, is closing fast. Anthropic’s new model, Claude Mythos, and its Project Glasswing, showed that finding exploitable vulnerabilities and subtle cracks from The Hacker News https://thehackernews.com/2026/04/after-mythos-new-playbooks-for-zero.html

I aggregated the statistics created from the cyber attacks timelines published in the first quarter of 2026. In this period, I collected a total of 528 events (5.87 events/day) dominated by Cyber Crime with 66%, followed by Cyber Espionage with 18%, Hacktivism with 3%, and finally Cyber Warfare with 2%. from HACKMAGEDDON https://www.hackmageddon.com/2026/04/28/q1-2026-cyber-attack-statistics/

A Chinese national accused of being a member of the Silk Typhoon hacking group has been extradited to the U.S. from Italy.  Xu Zewei, 34, was arrested in July 2025 by Italian authorities for his alleged links to the Chinese state-sponsored threat group and for orchestrating cyber attacks against American organizations and government agencies between February 2020 and June 2021, including from The Hacker News https://thehackernews.com/2026/04/chinese-silk-typhoon-hacker-extradited.html

Microsoft on Monday revised its advisory for a now-patched, high-severity security flaw impacting Windows Shell to acknowledge that it has been actively exploited in the wild. The vulnerability in question is CVE-2026-32202 (CVSS score: 4.3), a spoofing vulnerability that could allow an attacker to access sensitive information. It was addressed as part of its Patch Tuesday update for this from The Hacker News https://thehackernews.com/2026/04/microsoft-confirms-active-exploitation.html

Everything is dumb again. This week feels broken in a very familiar way. Old tricks are back. New tools are doing shady crap. Supply chains got hit. Fake help desks worked. Weird research showed how easy some attacks still are. Most of it feels like stuff we should have fixed years ago. Bad extensions. Stolen creds. Remote tools are getting abused. Malware hides in places people trust. Same from The Hacker News https://thehackernews.com/2026/04/weekly-recap-fast16-malware-xchat.html

Cybersecurity researchers have flagged dozens of Microsoft Visual Studio Code (VS Code) extensions on the Open VSX repository that are linked to a persistent information-stealing campaign dubbed GlassWorm. The cluster of 73 extensions has been identified as cloned versions of their legitimate counterparts. Of these, six have been confirmed to be malicious, with the remaining acting as seemingly from The Hacker News https://thehackernews.com/2026/04/researchers-uncover-73-fake-vs-code.html

Sent by a Spanish diplomat. Apparently people have been working on it since it was rediscovered in 1860. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/medieval-encrypted-letter-decoded.html

Cybersecurity researchers have disclosed details of a telecommunications fraud campaign that uses fake CAPTCHA verification tricks to dupe unsuspecting users into sending international text messages that incur charges on their mobile bills, generating illicit revenue for the threat actors who lease the phone numbers. According to a new report published by Infoblox, the operation is believed to from The Hacker News https://thehackernews.com/2026/04/fake-captcha-irsf-scam-and-120-keitaro.html

Cybersecurity researchers have discovered a new Lua-based malware created years before the notorious Stuxnet worm that aimed to sabotage Iran's nuclear program by destroying uranium enrichment centrifuges. According to a new report published by SentinelOne, the previously undocumented cyber sabotage framework dates back to 2005, primarily targeting high-precision calculation software to tamper from The Hacker News https://thehackernews.com/2026/04/researchers-uncover-pre-stuxnet-fast16.html

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has revealed that an unnamed federal civilian agency's Cisco Firepower device running Adaptive Security Appliance (ASA) software was compromised in September 2025 with malware called FIRESTARTER. FIRESTARTER, per CISA and the U.K.'s National Cyber Security Centre (NCSC), is assessed to be a backdoor designed for remote access and from The Hacker News https://thehackernews.com/2026/04/firestarter-backdoor-hit-federal-cisco.html

The Office of Inspector General (OIG) of the U.S. National Aeronautics and Space Administration (NASA) has revealed how a Chinese national posed as a U.S. researcher as part of a spear-phishing campaign to obtain sensitive information from the space agency, as well as from government entities, universities, and private companies, in violation of export control laws. "For years, NASA employees from The Hacker News https://thehackernews.com/2026/04/nasa-employees-duped-in-chinese.html

Cybersecurity researchers have discovered a set of malicious apps on the Apple App Store that impersonate popular cryptocurrency wallets in an attempt to steal recovery phrases and private keys since at least fall 2025. "Once launched, these apps redirect users to browser pages designed to look similar to the App Store and distribute trojanized versions of legitimate wallets," Kaspersky from The Hacker News https://thehackernews.com/2026/04/26-fakewallet-apps-found-on-apple-app.html

It was used to track a Dutch naval ship: Dutch journalist Just Vervaart, working for regional media network Omroep Gelderland, followed the directions posted on the Dutch government website and mailed a postcard with a hidden tracker inside. Because of this, they were able to track the ship for about a day, watching it sail from Heraklion, Crete, before it turned towards Cyprus. While it only showed the location of that one vessel, knowing that it was part of a carrier strike group sailing in the Mediterranean could potentially put the entire fleet at risk. […] Navy officials reported that the tracker was discovered within 24 hours of the ship’s arrival, during mail sorting, and was eventually disabled. Because of this incident, the Dutch authorities now ban electronic greeting cards, which, unlike packages, weren’t x-rayed before being brought on the ship. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/hiding-bluetooth-trackers-in-mail.html

Chinese-speaking individuals are the target of a new campaign that uses a trojanized version of SumatraPDF reader to deploy the AdaptixC2 Beacon post-exploitation agent and ultimately facilitate the abuse of Microsoft Visual Studio Code (VS Code) tunnels for remote access. Zscaler ThreatLabz, which discovered the campaign last month, has attributed it with high confidence to Tropic Trooper (aka from The Hacker News https://thehackernews.com/2026/04/tropic-trooper-uses-trojanized.html

The first timeline of April 2026 brings an evolution in terms of methodology: from now on I will map the initial access techniques with the MITRE ATT&CK model. I also decided to merge the categories of Finance and Fintech in the sectors chart. From an event perspective, the first half of April 2026 confirmed a sustained trend... from HACKMAGEDDON https://www.hackmageddon.com/2026/04/24/1-15-april-2026-cyber-attacks-timeline/

A previously undocumented threat activity cluster known as UNC6692 has been observed leveraging social engineering tactics via Microsoft Teams to deploy a custom malware suite on compromised hosts. "As with many other intrusions in recent years, UNC6692 relied heavily on impersonating IT helpdesk employees, convincing their victim to accept a Microsoft Teams chat invitation from an account from The Hacker News https://thehackernews.com/2026/04/unc6692-impersonates-it-helpdesk-via.html

You scroll past one incident and see another that feels familiar, like it should have been fixed years ago, but it still works with small changes. Same bugs. Same mistakes. The supply chain is messy. Packages you did not check are stealing data, adding backdoors, and spreading. Attacking the systems behind apps is easier than breaking the apps themselves. The exploits are simple but still work from The Hacker News https://thehackernews.com/2026/04/threatsday-bulletin-290m-defi-hack.html

Cyber-enabled crimes cost Americans nearly $21 billion in 2025, a 26% increase from the previous year, according to the FBI’s latest Internet Crime Report. Phishing, extortion, and investment scams were the most commonly reported attacks, with AI-related scams driving some of the costliest losses. Phishing was the top attack vector, with these attacks leading to more than $215 million in losses. from Human Risk Management Blog https://blog.knowbe4.com/fbi-report-americans-lost-20-billion-to-fraud-2025

Last week, Anthropic announced Project Glasswing, an AI model so effective at discovering software vulnerabilities that they took the extraordinary step of postponing its public release. Instead, the company has given access to Apple, Microsoft, Google, Amazon, and a coalition of others to find and patch bugs before adversaries can. Mythos Preview, the model that led to Project Glasswing, found from The Hacker News https://thehackernews.com/2026/04/project-glasswing-proved-ai-can-find.html

404 Media reports (alternate site ): The FBI was able to forensically extract copies of incoming Signal messages from a defendant’s iPhone, even after the app was deleted, because copies of the content were saved in the device’s push notification database…. The news shows how forensic extraction—­when someone has physical access to a device and is able to run specialized software on it—­can yield sensitive data derived from secure messaging apps in unexpected places. Signal already has a setting that blocks message content from displaying in push notifications; the case highlights why such a feature might be important for some users to turn on. “We learned that specifically on iPhones, if one’s settings in the Signal app allow for message notifications and previews to show up on the lock screen, [then] the iPhone will internally store those notifications/message previews in the internal memory of the device,” a supporter of the defendants who was taking notes during the trial told...

Vercel on Wednesday revealed that it has identified an additional set of customer accounts that were compromised as part of a security incident that enabled unauthorized access to its internal systems. The company said it made the discovery after expanding its investigation to include an extra set of compromise indicators, alongside a review of requests to the Vercel network and environment from The Hacker News https://thehackernews.com/2026/04/vercel-finds-more-compromised-accounts.html

Apple has rolled out a software fix for iOS and iPadOS to address a Notification Services flaw that stored notifications marked for deletion on the device. The vulnerability, tracked as CVE-2026-28950 (CVSS score: N/A), has been described as a logging issue that has been addressed with improved data redaction. "Notifications marked for deletion could be unexpectedly retained on the device," from The Hacker News https://thehackernews.com/2026/04/apple-patches-ios-flaw-that-stored.html

Cybersecurity researchers have warned of malicious images pushed to the official "checkmarx/kics" Docker Hub repository. In an alert published today, software supply chain security company Socket revealed that unknown threat actors managed to have overwritten existing tags, including v2.1.20 and alpine, while also introducing a new v2.1.21 tag that does not correspond to an official release. The from The Hacker News https://thehackernews.com/2026/04/malicious-kics-docker-images-and-vs.html

Cybersecurity researchers have flagged a fresh set of packages that have been compromised by bad actors to deliver a self-propagating worm that spreads through stolen developer npm tokens. The supply chain worm has been detected by both Socket and StepSecurity, with the companies tracking the activity under the name CanisterSprawl owing to the use of an ICP canister to exfiltrate the stolen data from The Hacker News https://thehackernews.com/2026/04/self-propagating-supply-chain-worm.html

Threat actors are abusing agentic AI automation platforms to deliver malware and send phishing emails, according to researchers at Cisco Talos. The researchers observed attackers using n8n, a legitimate platform that automates workflows in web apps and services like Slack, GitHub, Google Sheets, and others. from Human Risk Management Blog https://blog.knowbe4.com/phishing-campaigns-abuse-ai-workflow-automation-platforms

A new phishing campaign is using WhatsApp messages to deliver malware, according to researchers at Microsoft. The attackers are attempting to trick users into installing malicious Visual Basic Script (VBS) files. “The campaign relies on a combination of social engineering and living-off-the-land techniques,” Microsoft says. “It uses renamed Windows utilities to blend into normal system activity, retrieves payloads from trusted cloud services such as AWS, Tencent Cloud, and Backblaze B2, and installs malicious Microsoft Installer (MSI) packages to maintain control of the system. By combining trusted platforms with legitimate tools, the threat actor reduces visibility and increases the likelihood of successful execution.” If a user falls for the phishing attack, the malicious VBS file creates a hidden folder on the infected system and creates renamed versions of legitimate Windows utilities to evade detection. Microsoft offers the following advice to help organizations thwart these ...

On January 31, 2026, researchers disclosed that Moltbook, a social network built for AI agents, had left its database wide open, exposing 35,000 email addresses and 1.5 million agent API tokens across 770,000 active agents. The more worrying part sat inside the private messages. Some of those conversations held plaintext third-party credentials, including OpenAI API keys shared between agents, from The Hacker News https://thehackernews.com/2026/04/toxic-combinations-when-cross-app.html

ICE has admitted that it uses spyware from the Israeli company Graphite. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/ice-uses-graphite-spyware.html

Microsoft has released out-of-band updates to address a security vulnerability in ASP.NET Core that could allow an attacker to escalate privileges. The vulnerability, tracked as CVE-2026-40372, carries a CVSS score of 9.1 out of 10.0. It's rated Important in severity. An anonymous researcher has been credited with discovering and reporting the flaw. "Improper verification of cryptographic from The Hacker News https://thehackernews.com/2026/04/microsoft-patches-critical-aspnet-core.html

A critical security vulnerability has been disclosed in a Python-based sandbox called Terrarium that could result in arbitrary code execution. The vulnerability, tracked as CVE-2026-5752, is rated 9.3 on the CVSS scoring system. "Sandbox escape vulnerability in Terrarium allows arbitrary code execution with root privileges on a host process via JavaScript prototype chain traversal," according to from The Hacker News https://thehackernews.com/2026/04/cohere-ai-terrarium-sandbox-flaw.html

A 24-year-old British national and senior member of the cybercrime group “ Scattered Spider ” has pleaded guilty to wire fraud conspiracy and aggravated identity theft. Tyler Robert Buchanan admitted his role in a series of text-message phishing attacks in the summer of 2022 that allowed the group to hack into at least a dozen major technology companies and steal tens of millions of dollars worth of cryptocurrency from investors. Buchanan’s hacker handle “ Tylerb ” once graced a leaderboard in the English-language criminal hacking scene that tracked the most accomplished cyber thieves. Now in U.S. custody and awaiting sentencing, the Dundee, Scotland native is facing the possibility of more than 20 years in prison. Two photos published in a Daily Mail story dated May 3, 2025 show Buchanan as a child (left) and as an adult being detained by airport authorities in Spain. “M&S” in this screenshot refers to Marks & Spencer, a major U.K. retail chain that suffered a ransomware a...

Security teams often present MTTR as an internal KPI. Leadership sees it differently: every hour a threat dwells inside the environment is an hour of potential data exfiltration, service disruption, regulatory exposure, and brand damage.  The root cause of slow MTTR is almost never "not enough analysts." It is almost always the same structural problem: threat intelligence that exists from The Hacker News https://thehackernews.com/2026/04/5-places-where-mature-socs-keep-mttr.html

A new phishing campaign is using WhatsApp messages to deliver malware, according to researchers at Microsoft. The attackers are attempting to trick users into installing malicious Visual Basic Script (VBS) files. “The campaign relies on a combination of social engineering and living-off-the-land techniques,” Microsoft says. “It uses renamed Windows utilities to blend into normal system activity, retrieves payloads from trusted cloud services such as AWS, Tencent Cloud, and Backblaze B2, and installs malicious Microsoft Installer (MSI) packages to maintain control of the system. By combining trusted platforms with legitimate tools, the threat actor reduces visibility and increases the likelihood of successful execution.” If a user falls for the phishing attack, the malicious VBS file creates a hidden folder on the infected system and creates renamed versions of legitimate Windows utilities to evade detection. Microsoft offers the following advice to help organizations thwart these ...

Cybersecurity researchers have discovered a vulnerability in Google's agentic integrated development environment (IDE), Antigravity, that could be exploited to achieve code execution. The flaw, since patched, combines Antigravity's permitted file-creation capabilities with an insufficient input sanitization in Antigravity's native file-searching tool, find_by_name, to bypass the program's Strict from The Hacker News https://thehackernews.com/2026/04/google-patches-antigravity-ide-flaw.html

Grupo Seguritech is a Mexican surveillance company that is expanding into the US. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/mexican-surveillance-company.html

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added eight new vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, including three flaws impacting Cisco Catalyst SD-WAN Manager, citing evidence of active exploitation. The list of vulnerabilities is as follows - CVE-2023-27351 (CVSS score: 8.2) - An improper authentication vulnerability in PaperCut from The Hacker News https://thehackernews.com/2026/04/cisa-adds-8-exploited-flaws-to-kev-sets.html

A critical security vulnerability has been disclosed in SGLang that, if successfully exploited, could result in remote code execution on susceptible systems. The vulnerability, tracked as CVE-2026-5760, carries a CVSS score of 9.8 out of 10.0. It has been described as a case of command injection leading to the execution of arbitrary code. SGLang is a high-performance, open-source serving from The Hacker News https://thehackernews.com/2026/04/sglang-cve-2026-5760-cvss-98-enables.html

A new survey from LevelBlue has found that a majority of Chief Technology Officers (CTOs) believe the human-related elements of their cybersecurity strategies are falling short. These concerns are exacerbated by the emergence of new threats, such as AI-assisted attacks. from Human Risk Management Blog https://blog.knowbe4.com/survey-security-leaders-emphasize-need-for-workforce-education

Monday’s recap shows the same pattern in different places. A third-party tool becomes a way in, then leads to internal access. A trusted download path is briefly swapped to deliver malware. Browser extensions act normally while pulling data and running code. Even update channels are used to push payloads. It’s not breaking systems—it’s bending trust. There’s also a shift in how attacks run. from The Hacker News https://thehackernews.com/2026/04/weekly-recap-vercel-hack-push-fraud.html

The fastest way to fall in love with an AI tool is to watch the demo. Everything moves quickly. Prompts land cleanly. The system produces impressive outputs in seconds. It feels like the beginning of a new era for your team. But most AI initiatives don't fail because of bad technology. They stall because what worked in the demo doesn't survive contact with real operations. The gap between a from The Hacker News https://thehackernews.com/2026/04/why-most-ai-deployments-stall-after-demo.html

The New York Times has a long article where the author lays out an impressive array of circumstantial evidence that the inventor of Bitcoin is the cypherpunk Adam Back. I don’t know. The article is convincing, but it’s written to be convincing. I can’t remember if I ever met Adam. I was a member of the Cypherpunks mailing list for a while, but I was never really an active participant. I spent more time on the Usenet newsgroup sci.crypt. I knew a bunch of the Cypherpunks, though, from various conferences around the world at the time. I really have no opinion about who Satoshi Nakamoto really is. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/is-satoshi-nakamoto-really-adam-back.html

Cybersecurity researchers have discovered a critical "by design" weakness in the Model Context Protocol's (MCP) architecture that could pave the way for remote code execution and have a cascading effect on the artificial intelligence (AI) supply chain. "This flaw enables Arbitrary Command Execution (RCE) on any system running a vulnerable MCP implementation, granting attackers direct access to from The Hacker News https://thehackernews.com/2026/04/anthropic-mcp-design-vulnerability.html

Cybersecurity researchers have flagged a new malware called ZionSiphon that appears to be specifically designed to target Israeli water treatment and desalination systems. The malware has been codenamed ZionSiphon by Darktrace, highlighting its ability to set up persistence, tamper with local configuration files, and scan for operational technology (OT)-relevant services on the local subnet. from The Hacker News https://thehackernews.com/2026/04/researchers-detect-zionsiphon-malware.html

Web infrastructure provider Vercel has disclosed a security breach that allows bad actors to gain unauthorized access to "certain" internal Vercel systems. The incident stemmed from the compromise of Context.ai, a third-party artificial intelligence (AI) tool, that was used by an employee at the company. "The attacker used that access to take over the employee's Vercel Google Workspace account, from The Hacker News https://thehackernews.com/2026/04/vercel-breach-tied-to-context-ai-hack.html

Pretty fantastic video from Japan of a giant squid eating another squid. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Blog moderation policy. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/friday-squid-blogging-new-giant-squid-video-2.html

Huntress is warning that threat actors are exploiting three recently disclosed security flaws in Microsoft Defender to gain elevated privileges in compromised systems. The activity involves the exploitation of three vulnerabilities that are codenamed BlueHammer (requires GitHub sign-in), RedSun, and UnDefend, all of which were released as zero-days by a researcher known as Chaotic Eclipse ( from The Hacker News https://thehackernews.com/2026/04/three-microsoft-defender-zero-days.html

Each year, Identity Management Day (IMD) serves as a global reminder that managing digital identities is more than a technical requirement; it is a cornerstone of modern trust. Now in its sixth year, IMD continues to emphasize how identity itself is evolving, stretching beyond human users to encompass machines, automated agents, and even AI-generated personas. from Human Risk Management Blog https://blog.knowbe4.com/identity-at-the-edge-how-the-sixth-annual-identity-management-day-highlights-the-new-frontiers-of-trust

Google this week announced a new set of Play policy updates to strengthen user privacy and protect businesses against fraud, even as it revealed it blocked or removed over 8.3 billion ads globally and suspended 24.9 million accounts in 2025. The new policy updates relate to contact and location permissions in Android, allowing third-party apps to access the contact lists and a user's location in from The Hacker News https://thehackernews.com/2026/04/google-blocks-83b-policy-violating-ads.html

Last week, Anthropic pulled back the curtain on Claude Mythos Preview , an AI model so capable at finding and exploiting software vulnerabilities that the company decided it was too dangerous to release to the public. Instead, access has been restricted to roughly 50 organizations—Microsoft, Apple, Amazon Web Services, CrowdStrike and other vendors of critical infrastructure—under an initiative called Project Glasswing . The announcement was accompanied by a barrage of hair-raising anecdotes: thousands of vulnerabilities uncovered across every major operating system and browser, including a 27-year-old bug in OpenBSD, a 16-year-old flaw in FFmpeg. Mythos was able to weaponize a set of vulnerabilities it found in the Firefox browser into 181 usable attacks; Anthropic’s previous flagship model could only achieve two. This is, in many respects, exactly the kind of responsible disclosure that security researchers have long urged. And yet the public has been given remarkably little wi...

Cybersecurity researchers have warned of an active malicious campaign that's targeting the workforce in the Czech Republic with a previously undocumented botnet dubbed PowMix since at least December 2025. "PowMix employs randomized command-and-control (C2) beaconing intervals, rather than persistent connection to the C2 server, to evade the network signature detections," Cisco Talos from The Hacker News https://thehackernews.com/2026/04/newly-discovered-powmix-botnet-hits.html

You often hear companies touting that they are AI enabled. But most do not give you the results of how that new AI stacks up with their previous non-AI offerings. We have some early data and want to share it. KnowBe4 was the first Human Risk Management (HRM) vendor to use AI. While our competitors have been touting the use of AI only since 2023 at the earliest, we have been using machine learning (ML), the backbone workhorse of AI, since early 2016 – for a decade! We were also the first HRM vendor to have multiple active AI agents in the market available for customers to use without requiring complicated hand-holding with customer support technicians. Today, we have over a dozen AI agents and more coming all the time. A few months ago, we launched KnowBe4’s Artificial Intelligence Defense Agents (AIDA), and specifically, the AIDA Orchestration (AO) agent . It allows admins to successfully manage human risk with the power and efficiency of AI. Customers can choose to allow AI ...

You know that feeling when you open your feed on a Thursday morning and it's just... a lot? Yeah. This week delivered. We've got hackers getting creative in ways that are almost impressive if you ignore the whole "crime" part, ancient vulnerabilities somehow still ruining people's days, and enough supply chain drama to fill a season of television nobody asked for. Not all bad though. Some  from The Hacker News https://thehackernews.com/2026/04/threatsday-bulletin-17-year-old-excel.html

In 2024, compromised service accounts and forgotten API keys were behind 68% of cloud breaches. Not phishing. Not weak passwords. Unmanaged non-human identities that nobody was watching. For every employee in your org, there are 40 to 50 automated credentials: service accounts, API tokens, AI agent connections, andOAuth grants. When projects end or employees leave, most from The Hacker News https://thehackernews.com/2026/04/webinar-find-and-eliminate-orphaned-non.html

A bank approved a Taboola pixel. That pixel quietly redirected logged-in users to a Temu tracking endpoint. This occurred without the bank’s knowledge, without user consent, and without a single security control registering a violation. Read the full technical breakdown in the Security Intelligence Brief. Download now → The "First-Hop Bias" Blind Spot Most& from The Hacker News https://thehackernews.com/2026/04/hidden-passenger-how-taboola-routes.html

Interesting research: “ Humans expect rationality and cooperation from LLM opponents in strategic games .” Abstract: As Large Language Models (LLMs) integrate into our social and economic interactions, we need to deepen our understanding of how humans respond to LLMs opponents in strategic settings. We present the results of the first controlled monetarily-incentivised laboratory experiment looking at differences in human behaviour in a multi-player p-beauty contest against other humans and LLMs. We use a within-subject design in order to compare behaviour at the individual level. We show that, in this environment, human subjects choose significantly lower numbers when playing against LLMs than humans, which is mainly driven by the increased prevalence of ‘zero’ Nash-equilibrium choices. This shift is mainly driven by subjects with high strategic reasoning ability. Subjects who play the zero Nash-equilibrium choice motivate their strategy by appealing to perceived LLM’s reasoning ab...

Threat actors have been observed weaponizing n8n, a popular artificial intelligence (AI) workflow automation platform, to facilitate sophisticated phishing campaigns and deliver malicious payloads or fingerprint devices by sending automated emails. "By leveraging trusted infrastructure, these attackers bypass traditional security filters, turning productivity tools into delivery from The Hacker News https://thehackernews.com/2026/04/n8n-webhooks-abused-since-october-2025.html

An offensive security perspective on Microsoft Edge WebView2 Runtime, including architectural weaknesses, existing vulnerabilities, and exploitation methods. The post Signed, Trusted, and Abused: Proxy Execution via WebView2 appeared first on Black Hills Information Security, Inc. . from Black Hills Information Security, Inc. https://www.blackhillsinfosec.com/proxy-execution-via-webview2/

A number of critical vulnerabilities impacting products from Adobe, Fortinet, Microsoft, and SAP have taken center stage in April's Patch Tuesday releases. Topping the list is an SQL injection vulnerability impacting SAP Business Planning and Consolidation and SAP Business Warehouse (CVE-2026-27681, CVSS score: 9.9) that could result in the execution of arbitrary database  from The Hacker News https://thehackernews.com/2026/04/april-patch-tuesday-fixes-critical.html

Few technologies have moved from experimentation to boardroom mandate as quickly as AI. Across industries, leadership teams have embraced its broader potential, and boards, investors, and executives are already pushing organizations to adopt it across operational and security functions. Pentera’s AI Security and Exposure Report 2026 reflects that momentum: every CISO surveyed from The Hacker News https://thehackernews.com/2026/04/deterministic-agentic-ai-architecture.html

This article on the walls of Constantinople is fascinating. The system comprised four defensive lines arranged in formidable layers: The brick-lined ditch, divided by bulkheads and often flooded, 15­20 meters wide and up to 7 meters deep. A low breastwork, about 2 meters high, enabling defenders to fire freely from behind. The outer wall, 8 meters tall and 2.8 meters thick, with 82 projecting towers. The main wall—a towering 12 meters high and 5 meters thick—with 96 massive towers offset from those of the outer wall for maximum coverage. Behind the walls lay broad terraces: the parateichion, 18 meters wide, ideal for repelling enemies who crossed the moat, and the peribolos, 15–­20 meters wide between the inner and outer walls. From the moat’s bottom to the highest tower top, the defences reached nearly 30 meters—a nearly unscalable barrier of stone and ingenuity. from Schneier on Security https://www.schneier.com/blog/archives/2026/04/defense-in-depth-medieval-style.html...