Chainalysis Begins Restoring Screening Services After Disclosing Exposed Password Hashes

TL;DR: Chainalysis said on November 6 it was restoring KYT and address screening in phases after a cyberattack. The firm earlier disclosed that names, usernames, password hashes and live tokens for users had been exposed. Customers were told to prepare password resets and API-key rotation; investigations data exposure has not been established. A disruption at one of cryptocurrency’s best-known investigative and compliance providers is also a test of operational resilience for the companies that depend on it. In a security incident notice updated November 6, Chainalysis said it had begun restoring access to its Know Your Transaction, or KYT, and address-screening products through a phased process. The restoration followed several days of service restrictions and increasingly detailed disclosures about a cyberattack. Because many crypto businesses use screening tools to investigate suspicious transactions or meet compliance obligations, this is a story about both information security and the ability of regulated operations to continue. The company’s disclosures evolved during the week Chainalysis initially reported discovering unauthorised activity affecting its internal systems and ...