Binance Disconnects SignalPlus APIs After Security Alert

Binance has removed its API key connection to SignalPlus after the Hong Kong-based options platform disclosed a security issue. The action follows a discovery made on Thursday, which was also identified by derivatives exchange Deribit, according to Cryptopolitan. Platforms with exposure were reported to be moving quickly to sever API connections rather than continue using them while the security assessment proceeds. The API links in question are used by institutional clients to access SignalPlus, a derivatives and options platform described by Cryptopolitan as valued at $500 million. Cryptopolitan also reports that Binance’s exposure was limited, although it does not provide a dollar amount or further detail about the affected positions or permissions. The available reports do not explain what triggered the alert or describe the suspected technical flaw. Unchained reports that Binance said its own systems and user funds were unaffected by the incident. That confirmation addresses the direct integrity of Binance and its customers, but it does not establish that every institution connected to SignalPlus was unaffected. Neither Binance nor SignalPlus has said whether anyone lost money, and the underlying issue remains unidentified in the supplied coverage. The response shows how a security disclosure at one market infrastructure provider can prompt connected venues to reduce API-level access. SignalPlus operates in the options market, where institutional connectivity can be important for trading and position management. The reports do not indicate whether the issue affected trading execution, client orders, withdrawals or stored assets, leaving those questions open while assessments continue. The broader crypto market was broadly down as the story developed. Total market capitalization stood at $2.62 trillion, Bitcoin was down 5.45% over 24 hours, and the Fear & Greed index registered 50, corresponding to Neutral. No specific coin linked to SignalPlus or the reported incident was identified, so the market figures provide general risk context rather than a direct measure of the event’s financial impact. The remaining items to watch are Binance’s final exposure assessment, clarification of the technical issue and any confirmation of losses or broader client effects.