Attacker hacked Bithumb employee's PC
More facts came to light on Monday, when pressured by local media, the company revealed that the breach occurred after an unknown attacker hacked the personal computer of a Bithumb employee, from where he stole the details of over 31,800 Bithumb users — about 3% of the platform's entire userbase.
source google thieve pic
According to local media [1, 2, 3, 4], the hack took place at around 22:00, local time, on Thursday, June 29, and the documents the hacker managed to access contained data on customer names, email addresses, and mobile phone numbers.
Soon after, Bithumb users started complaining online that someone was draining their accounts. It is unclear how the hacker gained control to targeted accounts.
Some users reported losses as big as 10 million won ($8,700) worth of cryptocurrency. Local media grossly estimates that the attacker made off with billions of won in cryptocurrency, but Bithumb never confirmed the exact amount of stolen funds.
credit goes to By Catalin Cimpanu from source (https://www.bleepingcomputer.com/news/security/fourth-largest-cryptocurrency-exchange-was-hacked-users-lose-ethereum-and-bitcoin/)
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