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Blink Suspends Services Amid Investigation into Security Incident

Kucoin • September 20, 2026

ME News reports that on September 19 (UTC+8), according to market information, attackers accessed a small number of Blink custodial accounts and withdrew funds. Blink stated that the vast majority of funds remain secure and non-custodial wallets were unaffected; its Bitcoin payment protocol, Spark, supports multiple Lightning Network wallets, but it has not yet been confirmed whether Spark was the source of this security incident. (Source: ChainCatcher)

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Blink Wallet Security Breach Drains Custodial Accounts On September 19, 2026, Blink Wallet, a Bitcoin Lightning Network platform, paused its services following a security breach that allowed an attacker to access and withdraw funds from a limited number of custodial accounts. Blink confirmed that only a 'few dozen' custodial accounts were affected, while the majority of funds remained secure and non-custodial wallets were unaffected. The company is currently investigating the incident and has promised to make every affected user whole. No specific details about the attack vector or the amount of funds withdrawn have been disclosed. This incident follows a series of security issues impacting various digital currency businesses and Lightning Network applications, raising concerns about the overall security in the sector. As of now, services remain suspended while the investigation continues. 10 sources 55

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Blink