KnowBe4 - Creating Noise: The Emerging Obfuscation Technique Designed to Evade Email Security NLP Detection Capabilities

Our Threat Intelligence team has observed an emerging obfuscation technique, specifically used to make Natural Language Processing (NLP) detection capabilities less effective. Broadly, malicious actors are adding additional characters, break lines, and legitimate links to the end of a phishing email in an attempt to disguise their malicious payloads amongst the noise and evade NLP detection.

from Human Risk Management Blog https://blog.knowbe4.com/nlp-obfuscation-techniques-email-security-evasion