Resolv Labs' USR stablecoin has depegged from the U.S. dollar and crashed more than 70% after an attacker exploited its contract to mint 80 million uncollateralized tokens. According to a tweet from the DeFi platform, the attack leveraged a “compromised private key” to mint $80 million worth of uncollateralized USR. A post-mortem from blockchain forensics firm Chainalysis reported that the attacker then quickly converted the unbacked USR into a staked version, wstUSR, before swapping it into other stablecoins and then Ethereum.