Bitcoin Core Overhauls Security Policy for AI Bug Discovery

This is a structural shift in how Bitcoin's most important codebase manages risk: the threat model now assumes AI can collapse the discovery-to-exploit window, so the old embargo calculus no longer holds. It affects node operators and downstream projects that depend on coordinated disclosure timelines, since faster backports and immediate releases mean less predictable upgrade cadence. The open question is whether expedited patching creates its own operational strain — rushed releases and fragmented node versions — and whether other critical open-source projects follow Bitcoin Core's lead.