Binance and Deribit Isolate SignalPlus API Connections After Alert

Binance revoked all API keys connected to SignalPlus after the third-party trading platform reported a potential security issue, according to Crypto Adventure, Blockonomi, Bitcoin.com, Crypto.news and U.Today. The move removed the external API connection between SignalPlus and exchange accounts as a precaution. Binance said its internal systems were unaffected and customer funds remained safe, although the available coverage does not establish that no unauthorized activity occurred.

Deribit also severed its SignalPlus connection, a response reported by Cryptopolitan and CryptoPotato. CryptoPotato said the disconnection stopped every trade, monitoring function and bot that SignalPlus had been running through Deribit. Crypto Economy reported that Binance advised SignalPlus users to review open positions and orders directly through their exchange accounts and wait for confirmation that the issue had been resolved. Crypto.news additionally reported a warning from Binance founder Changpeng Zhao that users connecting SignalPlus to other exchanges should consider similar precautions.

The broad agreement across the ten outlets is that exchanges with SignalPlus exposure acted quickly after the warning. Their emphasis differs, however: Blockonomi focuses on the absence of a disclosed unauthorized-activity finding, while CryptoPotato highlights the immediate operational effect on Deribit-based automation. Cryptopolitan describes Binance’s exposure as limited but also reports the removal of institutional API connections, while the other accounts consistently emphasize that every SignalPlus-linked Binance API key was revoked. No outlet quoted in the supplied coverage contradicts Binance’s assertion that its own systems and customer funds were safe.

SignalPlus was identified as a Hong Kong-based options platform and a provider of tools for cryptocurrency options and derivatives markets. Cryptopolitan described the service as valued at $500 million, making that figure the only supplied valuation and one attributed to that outlet rather than corroborated across the coverage. Bitcoin.com dates the Binance action to Thursday, November 5, 2026. It also places the response one week after an October 29 Binance hack, while Decrypt gives the same broad timing but rounds the reported loss to $6.4 billion and says North Korea was blamed.

Live market context shows a broadly positive crypto session, with total market capitalization at $2.73 trillion and Bitcoin up 1.86% over 24 hours. The Fear & Greed index stands at 50, categorized as Neutral. In the supplied altcoin snapshot, JUST trades at $0.142258, up 1.25% over 24 hours and 0.71% over seven days, with a market capitalization of $1.14 billion; neither JUST nor any other token was identified as part of the SignalPlus incident.

The immediate significance lies in the closure of API-based trading and monitoring access, particularly where automated strategies were active. Follow-up reporting will need to establish when SignalPlus connections might be restored, whether independent review identifies unauthorized activity and whether other exchanges had SignalPlus-linked exposure. Those points remain unresolved in the supplied coverage, which confirms precautionary disconnection rather than the cause or full scope of the reported security issue.