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BreachesNov 10, 2026

Mt. Gox – The Missing Bitcoin and Who Was Convicted of What

Mt. Gox exchange lost 850,000 bitcoins in 2014; convictions for falsifying records and money laundering, not theft.

In 2014, the Mt. Gox bitcoin exchange reported the disappearance of approximately 850,000 bitcoins. While its former boss, Mark Karpelès, was convicted of falsifying records, no one has been convicted of the theft itself. US prosecutors in 2023 charged two Russian nationals with conspiring to launder bitcoins from a 2011 hack, and Alexander Vinnik pleaded guilty in the US to a laundering conspiracy related to the BTC-e exchange. Repayments to creditors began in July 2024, with the deadline for completion extended to October 2027.

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The lesson from this incident

Full lesson

The Mt. Gox breach, rooted in a 2011 hack, exposed catastrophic failures in access control and security architecture at the world's largest bitcoin exchange at the time. Attackers were able to exfiltrate hundreds of thousands of bitcoins over an extended period, suggesting that monitoring and detection controls were either absent or ignored. The delayed discovery and inadequate incident response allowed laundering operations to continue for years before legal action was taken. This case illustrates that custodians of high-value digital assets bear extraordinary responsibility to implement layered security controls, and that the consequences of failure can persist for over a decade — with victims still awaiting full repayment as of 2027.

Indicators of Compromise

Extracted by AI from the linked source. Not reviewed by an editor. How this works

  • malware — Locky

Entities

Bitcoin (product)Bitcoin Cash (product)Mt. Gox (vendor)Alexey Bilyuchenko (threat_actor)Aleksandr Verner (threat_actor)Alexander Vinnik (threat_actor)