The attackers also tried to steal around 80 BTC and 6,500 ETH (currently worth over $12.6 million) from a cold wallet belonging to Stephens, but were thwarted by an email alert sent to Blockchain Capital employee.
Blockchain Capital co-founder loses $6.3 million in SIM swap hack
Blockchain Capital co-founder Bart Stephens has filed a lawsuit against as-yet-unknown individuals who he says stole $6.3 million in cryptocurrency from him. The attackers used a SIM swap attack to gain access to his crypto wallet, which they then drained of various tokens.