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Warning: Dozens of Fake Wallet Plugins Flood Firefox Store, Stealing Cryptocurrency

Summary: In a recent alert, security company Koi discovered over 40 counterfeit cryptocurrency wallet extensions in the official Firefox browser plugin store, impersonating popular wallets such as MetaMask and Coinbase Wallet. These malicious plugins steal input content exceeding 30 characters (primarily targeting mnemonic phrases) by implanting event listener code, and then transmit the data back to ...

In a recent alert, security company Koi discovered over 40 counterfeit cryptocurrency wallet extensions in the official Firefox browser plugin store, impersonating popular wallets such as MetaMask and Coinbase Wallet. These malicious plugins steal input content exceeding 30 characters (primarily targeting mnemonic phrases) by implanting event listener code, and then transmit the data back to the attacker's server.

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