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Microsoft Security Blog
Recent VQV signals collected from this public source, grouped with the topics where it appears.
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SECURITY · SOURCE-BACKED
93% signal strength
ASCII Smuggling Used to Evade Email Filters in Phishing Attacks
Invisible Unicode characters, initially used to hide instructions from AI models, are now employed to obfuscate words and bypass email security filters. This technique, known as ASCII smuggling, has crossed over from AI prompt injection to phishing evasion.
Why it matters: This method complicates the detection of phishing emails by traditional filters, increasing the risk of successful cyberattacks. Understanding this tactic is crucial for improving email security and protecting users from evolving threats.
What this means for you: Security-conscious readers may want to review the source and watch for practical exposure or mitigation details.
Why this is here: This signal is recent, source-backed, and connected to activity readers are already following in AI Security.