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1. Fake Firefox wallet extensions
Malwarebytes reports researchers found three Firefox extensions impersonating Phantom, Jupiter, and Bitget. They sought recovery phrases and private keys—secrets that can let someone control a wallet. The report says the listings were removed, but doesn’t say how many people installed them. Check your Firefox extensions and remove one if present. If you entered a wallet secret into one, create a new wallet on a clean device and move your assets there; that helps protect them from anyone who has the old secret.