Four versions of the Fearless Wallet browser extension sent users' private keys to an attacker's server from February 2025 to October 2026, exposing roughly 6,000 installations. Eight users reported unauthorized transfers totaling 17,286 DOT (around $20,000). The Polkadot Community Foundation advises all users of these versions to generate new keys in a different wallet and transfer their balances, as leaked private keys cannot be changed. Staked DOT require a 28-day unbonding period before moving. The incident highlights risks in third-party wallet software and the importance of hardware wallets for secure custody.
Polkadot private key leak incident provides context for cryptocurrency market data. For readers following crypto, here is Pluang's market snapshot as of Oct 21, 2026 22:43 WIB: 41 of 50 major cryptocurrencies rose today. Notable movers include COMP at Rp457.871 (+4.50%, 32% Sell / 68% Buy), UNI at Rp136.984 (+4.34%, 59% Sell / 41% Buy), and LINK at Rp227.271 (+4.23%, 38% Sell / 62% Buy).
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