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June 19, 2011Crises & controversyFailures & lossesdocumented

Mt. Gox suffers a major security breach

A compromised account enabled fraudulent trades that briefly drove Mt. Gox’s displayed bitcoin price to one cent.

The exchange halted trading and said it would reverse the affected trades. A leaked user database exposed usernames, email addresses, and weak password hashes, leading to losses on other services where credentials were reused.