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Once popular for attacking AI, ASCII smuggling is embraced by spammers

ASCII smuggling is a covert Unicode technique that lets spammers bypass AI content filters. The method inserts invisible Unicode characters into text, tricking models into misclassifying or ignoring malicious content. Its growing adoption by spammers signals a new challenge for AI moderation systems.

Ars Technica·Sep 4, 2026

Opening Kapyn…