Researchers Built a Self-Propagating WeChat Worm With AI in Just Over a Week

peterwildeford · x · 2026-09-09

Per NYT, researchers at a security firm used significant AI assistance to build a self-propagating WeChat worm in a little over a week. The victim gets a phone call — answering or even letting it ring is enough to infect the phone. The worm compromises the account, reads and sends messages, makes calls, and auto-spreads to every saved friend. Chained with other bugs, it could have fully compromised the device. Tencent has patched it and says no users were affected; WeChat has 1.4 billion monthly users.

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