Crypto researcher identifies massive wallet draining operation

Crypto researcher Tayvano posted a Twitter thread about a massive, mysterious wallet draining operation that has siphoned more than 5,000 ETH (~$9.88 million at today's prices) as well as other tokens and NFTs from wallets across more than eleven blockchains since December 2022. The operation appears to target more sophisticated crypto users, but the mechanism of attack is unclear. The researcher hypothesized that "someone has got themselves a fatty cache of data from 1+ yr ago & is methodically draining the keys as they parse them from the treasure trove", but emphasized that that was only speculation.