Chainalysis, a blockchain analytics firm serving crypto businesses, said customers could use its Data Solutions service again from 3 a.m. ET (08:00 UTC) Tuesday, Nov. 10, after a cyberattack.
Organizations must provide Chainalysis with trusted IP addresses to add to its allowlist. After access returns, users must change their passwords, and API keys must be rotated where applicable before transactions are registered.
Before that, Chainalysis had restored Reactor, Address Screening and its Know Your Transaction (KYT) interface and API on Nov. 7. The company said the returned services included enhanced security measures.
Chainalysis said the incident affected its entire user base, exposing authentication data, including password hashes and live tokens, as well as names and usernames. On Nov. 4, the company said it had found no signs that investigation data was accessed or its attribution data manipulated. EconoTimes previously covered the exposure of user password hashes and live tokens.