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Published September 4, 2026 at 5:18 PM

Ars Technica

Sep 6, 2026, 6:00 AM

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

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

A once-overlooked block of unicode that's invisible to humans is gaining ever wider use.

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Canonical URL for this story: https://arstechnica.com/security/2026/09/once-popular-for-attacking-ai-ascii-smuggling-is-embraced-by-spammers/