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Tag: malicious firefox extensions

2 articles

Person sits at desk with laptop, hands paused over keyboard, surrounded by blurred browser windows.

Malicious Firefox Extensions Target Crypto Wallets, Exfiltrate Recovery Phrases

Beware of malicious Firefox extensions that masquerade as helpful tools but secretly steal your crypto wallet secrets, including recovery phrases and private keys, by intercepting them during wallet import flows. These sneaky add-ons can even fake legitimate wallet interfaces to trick you into handing over sensitive info.

Analyst 207
Person working at desk with Firefox browser open on laptop amidst papers and cryptocurrency notes.

Malicious Firefox Extensions Target Web3 Wallets

Beware of malicious Firefox extensions that have been targeting Web3 wallets as part of a large-scale campaign, with 40 confirmed malicious add-ons and 37 working together to steal your cryptocurrency. This coordinated threat, known as Offside Wallet Theft Factory, has been active since March 2026.

Analyst 207