Update
Chainalysis Restores Reactor, KYT, and Address Screening After Security Incident
Blockchain analytics company Chainalysis has restored Reactor, KYT, and Address Screening services after a security incident exposed all users' password hashes and live login tokens. Customers must reset passwords and replace applicable API keys before registering transactions. The company announced the return of Reactor and its screening products on November 7, providing instructions for reconnecting with enhanced security measures. KYT's interface and API, along with Address Screening, were operational on November 7, while Investigations API and Rapid Lookup remained under maintenance. Reactor's access is phased, and all users must reset passwords and rotate API keys as applicable before registering transactions.