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Not financial advice. Don't invest unless you're prepared to lose all the money you invest. This is a high-risk investment and you should not expect to be protected if something goes wrong.

Shielded LabsCore team

Reduced-round SHA-256 collision attack improves HashSmash results

21:08, 22 Oct 2026

Shielded Labs says a new collision attack targets SHA-256 reduced to 39 of 64 rounds, reported by Dariia Porechna as about 1 billion times cheaper than prior work, with further improvements by others. Full SHA-256 used by Bitcoin is described as still safe.

May affect

Since it landed