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mediumDefendersecurity advisoryms_security_blog · Sep 3, 2026
ASCII smuggling crosses over from AI prompt injection to phishing evasion
Unicode characters are being used to evade email filters and phishing detection, highlighting the need for enhanced threat protection measures.
“Invisible Unicode characters popularized for hiding instructions from AI models are now being used to obfuscate words before email filters parse them. The post ASCII smuggling crosses over from AI prompt injection to phishing evasion appeared first on Microsoft Security Blog.”
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threat_protectionvulnerability_management
Audience
security_engineer
Environment
cloudhybrid
Classification confidence: 95%
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