According to Arkham Intelligence, Indian cryptocurrency exchange Unocoin discovered unauthorized access to its servers on November 9 and temporarily disabled user logins while investigating. By November 12, the exchange's website remained offline, displaying a scheduled maintenance notice that differed from its initial statement citing unauthorized server access.
Blockchain analytics platform Arkham Intelligence identified approximately 81,000 Unocoin-attributed addresses with zero portfolio value. Unocoin stated no cryptocurrency funds were lost but provided no technical details on how the breach occurred or which systems were affected. The exchange has not published an incident report and did not respond to requests for comment.