Today, BlockFi disclosed a SIM-swapping attack that revealed personal information related to a large swath of the firm’s clients. While customer funds are secure, BlockFi said, their names and addresses were compromised along with their activity histories.
This security breach comes on the heels of a cryptojacking exploit targeting European supercomputers researching COVID-19. Elsewhere, class-action lawsuits have been brought against Block.one and chip-maker Nvidia, while the little-known firm BMA is suing BitMEX for allegedly orchestrating the largest financial crime in American history. Here’s the story:
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BlockFi said an attacker got hold of users’ data by compromising an employee’s phone and taking control of the person’s phone number through a SIM-swap attack. The New York-based crypto lending platform announced in a memo to users on Tuesday that a hacker – whose identity remains unknown – gained access to some of its retail marketing systems for just over an hour early on May 14. The hacker accessed confidential data such as names, dates of birth, postal addresses and activity histories but was unable to withdraw user funds or access other sensitive account information including bank account details, Social Security and tax identification numbers.
The trading engine for BitMEX, formerly the largest bitcoin derivatives exchange measured by open interest, went down on Tuesday, according to the exchange’s status page. BitMEX supported roughly $2.2 billion in bitcoin futures trading volume over the last 24 hours, according to Skew, and is investigating the incident.