Flow Foundation Addresses Security Breach and Asset Transfer

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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.

Flow Foundation Reports $3.9 Million Asset Transfer Due to Security Breach On December 27, 2025, the Flow Foundation reported a security breach where attackers exploited a vulnerability in the Flow execution layer. Approximately $3.9 million worth of assets were transferred off-chain before validators could respond. 2 sources 31