The $26M Legacy Hangover: Truebit’s Zombie Contract Eats Itself

A math error from 2021 just woke up and nuked 8,500 ETH because nobody checks the basement.

It’s January 2026, and we’re still losing eight figures to integer overflows. You read that right. While the rest of the industry is fighting AI-driven phishing and quantum decryption theories, Truebit just got gutted by a bug that was solved in Solidity 0.8.0 five years ago. 8,535 ETH gone in a heartbeat. No sophisticated bridge-hop, no private key leak—just a dusty smart contract that couldn't count past its own limit.

Batuhan Aydın Jan 22, 2026 • 3 min read
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