A TLBL whale appears to have suffered another major theft, with more than $26 million in assets drained from three wallets in what Lookonchain said was a suspected private key leak. The incident follows a phishing attack two years ago that cost the same investor $24 million, pushing the cumulative amount stolen to more than $50 million. A private key breach can give an attacker full control of a wallet, making it more damaging than a one-off transaction approval scam.