A bitcoiner has fallen victim to one of the largest individual bitcoin thefts ever, losing 783 BTC — worth more than $90 million — in one transaction. The theft was revealed by blockchain investigator ZachXBT, who described it as a “social engineering attack,” where scammers posed as support staff from a digital asset exchange and a hardware wallet provider. ZachXBT on X According to blockchain data, the incident occurred on August 19, 2025, at 11:06 a.m. UTC. The scammers reportedly convinced the victim they were support agents. By impersonating trusted companies, they were able to get the investor to share …