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15 Malicious Firefox Extensions Abuse Cloudflare Workers to Exfiltrate Crypto Wallet Secrets

Matched: cryptocurrency

Fifteen malicious Firefox extensions posing as crypto wallets, themes, and browser tools have been stealing recovery phrases, private keys, login credentials, and clipboard data since at least March 2026. The campaign uses Cloudflare Workers to exfiltrate stolen information and spans 77 extensions total, putting users' digital assets and online accounts at serious risk.

40 Malicious Firefox Extensions Pose as Web3 Products to Steal Wallet Secrets

Matched: cryptocurrency

Researchers found 40 malicious Firefox extensions disguised as Web3 products like OKX and Rabby Wallet that steal cryptocurrency wallet credentials. Dubbed "Offside Wallet Theft Factory" by Socket Threat Research, the extensions are part of a broader group of 77 add-ons sharing code and infrastructure. Users are advised to verify extensions carefully before installing.