Nomic nBTC Double-Spend Exploit
An attacker abused a double-spend flaw in Nomic's Bitcoin bridge to mint about 39.84 unbacked nBTC, leaving roughly 36% of Osmosis's alloyed Bitcoin without reserves.
An archive of cryptocurrency security incidents — hacks, exploits, bridge failures and rug pulls, documented with on-chain evidence.
An attacker abused a double-spend flaw in Nomic's Bitcoin bridge to mint about 39.84 unbacked nBTC, leaving roughly 36% of Osmosis's alloyed Bitcoin without reserves.
An attacker exploited a range-proof caching bug in Liquid's Elements software to mint about 4,000 unbacked L-BTC and peg them out for roughly $319 million in real bitcoin.
DPRK's Lazarus drained $4.3M from ALEX Lab's Stacks cross-chain bridge via a flaw in the bridge's verification logic, traced via on-chain laundering.
$13M+ drained from THORChain across two attacks one week apart, both exploiting fake-deposit flaws in the Bifrost Ethereum bridge weeks into Chaosnet.