According to CoinMeta, SignalPlus disclosed that its losses due to the cyberattack were less than $82,000. The attack involved forged Microsoft Teams invitation letters. Binance and Deribit have revoked the API keys related to this derivatives trading platform. According to SignalPlus's event statement on November 5th, the attack affected a small number of accounts that did not have IP whitelist settings. The company stated that it detected suspicious activity earlier on November 4th and controlled the intrusion before contacting exchange partners to disable the relevant customer credentials. SignalPlus also mentioned that all services have been put into maintenance mode, and staff are reviewing security and coordinating the removal of API connections from the exchange.