Schneier - Security Vulnerabilities in the RCS Texting Protocol

Interesting research:

SRLabs founder Karsten Nohl, a researcher with a track record of exposing security flaws in telephony systems, argues that RCS is in many ways no better than SS7, the decades-old phone system carriers still used for calling and texting, which has long been known to be vulnerable to interception and spoofing attacks. While using end-to-end encrypted internet-based tools like iMessage and WhatsApp obviates many of those of SS7 issues, Nohl says that flawed implementations of RCS make it not much safer than the SMS system it hopes to replace.



from Schneier on Security https://www.schneier.com/blog/archives/2019/12/security_vulner_21.html

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