Once popular for attacking AI, ASCII smuggling is embraced by spammers
Summary
A block of Unicode characters, previously noted for its use in attacking AI systems, is now being adopted by spammers. These characters are invisible to human eyes, making them an effective tool for evading detection.
IFF Assessment
FOE
This development is bad for defenders as it represents a new, hard-to-detect method for malicious actors to spread spam.
Defender Context
Spammers are leveraging invisible Unicode characters, previously identified as an AI attack vector, to bypass filters and deliver unwanted messages. Defenders need to be aware of this technique and ensure their email security solutions can identify and block these obfuscated payloads.