Chainalysis says attackers exposed usernames, password hashes and live tokens for all of its customers. "While the company locked Chainalysis accounts as a precaution after discovering that some customers' passwords had been exposed and asked users to reset their passwords before signing in again, it has now taken the login portal offline, together with Reactor and Data Solutions, the Know-Your-Transaction (KYT) user interface and API, and address screening products, after discovering further abnormal activity," reports BleepingComputer. The company says it has no evidence that investigative data or blockchain attribution records were accessed or altered, but all users will be required to reset passwords and rotate API keys before regaining access. BleepingComputer reports: Chainalysis provides blockchain analysis tools to trace cryptocurrency transactions and investigate crimes such as fraud, ransomware, and money laundering. Its customer list includes law enforcement, government agencies, financial institutions, insurance companies, and cryptocurrency businesses worldwide. This follows the company's disclosure last Friday that attackers using AI tools accessed customers' names, email addresses, user IDs, and organizational role labels using what it described as "offensive agentic techniques." While it initially said the impact was limited and the breach affected only non-sensitive identity metadata, later updates revealed that usernames and password hashes for all customers were exposed in an "on-path attack" (more commonly known as a Man-in-the-Middle or MITM attack). However, the company found no evidence that the attackers accessed investigative graph data or altered its blockchain attribution repositories. [...] To ensure threat actors don't access affected accounts, Chainalysis asked customers to provide trusted IP addresses so they can regain access to the login portal once it is brought back online and reset their credentials.Read more of this story at Slashdot.