#6
The Hacker News
general
September 04, 2026 at 15:57 UTC
Phishing Campaign Sends Millions of Emails Using Invisible Unicode to Evade Filters
By [email protected] (The Hacker News)
AI Summary
Microsoft's Security Research team flagged a high-volume phishing campaign using invisible Unicode tag characters to split financial lure keywords like 'funding,' bypassing email security filters that parse message content. This technique, originally associated with AI prompt injection attacks, has now been weaponized at mass scale against email security tooling, requiring defenders to update filter logic beyond simple keyword matching.
Relevance score: 83.0/100
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