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The Frontier Safety Framework v3.1 change notes state that the update raises the recommended level of security for the CBRN, Cyber and Harmful Manipulation Critical Capability Levels to Security Level 2+. Copy claim link
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Machine-checked, not reviewed by an editor Stated in source Supported
Supporting evidence: primary · 2 sources
Basis of the change Official changelog Subject version v3.1 · Published 2026-04-17 · Effective date not established Object version v3.0 · Published 2025-09-22 · Effective date not established Date 2026-04-17 · publication Scope and limits The publisher’s own description of its change. It is not evidence that any level of security was applied, and the edition does not say what Security Level 2+ requires beyond Security level 2.
The evidence 02 primary source Supports the claim
Frontier Safety Framework — v3.1 ↗ Google DeepMind · 2026-04-17
Archived copy, captured 2026-04-23: Frontier Safety Framework — v3.1 ↗
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Paraphrase The bullet says the version outlined an enhanced level of security for the CBRN, Cyber and Harmful Manipulation Critical Capability Levels to Security Level 2+.
Location in source PDF p. 17 (printed p. 17), §5.3 Past Updates and Changes, “Version 3.1 (April 17, 2026)”, third bullet
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Google DeepMind Version Frontier Safety Framework v3.1; publication date 2026-04-17. Version date 2026-04-17 Canonical address Open the canonical source ↗ Accessed 2026-09-18 Language English (en) Archive copy Open archived copy, captured 2026-04-23: Frontier Safety Framework — v3.1 ↗ . Captured 6 days after the recorded version date. An archive copy shows only what the archive retrieved on 2026-04-23. It does not prove what the page said earlier, and it can differ from the copy checked on 2026-09-18.Attribution Google DeepMind, Frontier Safety Framework — v3.1. Reuse No open redistribution licence asserted. Selekoa practice: metadata, attributed paraphrases and short attributed quotations under the editorial policy (at most 50 words each; at most 400 quoted words per document across the dataset, and about 10% of a document under about 2,000 words). Documents are linked externally, not redistributed. Publisher terms that forbid quotation override this practice. Check notes Candidate pack passage, AI and biosecurity (research/ai-bio). The paraphrase is Selekoa’s, written from the text retrieved for the candidate pack on 2026-10-28; it is not a quotation and was not machine-matched. Paraphrased because this source’s quotation budget is almost fully used by the dataset’s existing records, including a quote from the first bullet of the same entry. A cross-family machine check (2026-10-30, item 11) re-read the record’s sources and found full support. No human editorial review. primary source Supports the claim
Frontier Safety Framework — v3.0 ↗ Google DeepMind · 2025-09-22
Archived copy, captured 2025-09-22: Frontier Safety Framework — v3.0 ↗
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Paraphrase The v3.0 column recommends Security level 2 for CBRN uplift level 1.
Location in source PDF p. 10 (printed p. 10), Table 2.2.1.a, “Recommended security level and rationale” column
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Google DeepMind Version Frontier Safety Framework v3.0; publication date 2025-09-22. Version date 2025-09-22 Canonical address Open the canonical source ↗ Accessed 2026-09-18 Language English (en) Archive copy Open archived copy, captured 2025-09-22: Frontier Safety Framework — v3.0 ↗ . Captured on the recorded version date. An archive copy shows only what the archive retrieved on 2025-09-22. It does not prove what the page said earlier, and it can differ from the copy checked on 2026-09-18.Attribution Google DeepMind, Frontier Safety Framework — v3.0. Reuse No open redistribution licence asserted. Selekoa practice: metadata, attributed paraphrases and short attributed quotations under the editorial policy (at most 50 words each; at most 400 quoted words per document across the dataset, and about 10% of a document under about 2,000 words). Documents are linked externally, not redistributed. Publisher terms that forbid quotation override this practice. Check notes Candidate pack passage, AI and biosecurity (research/ai-bio). The paraphrase is Selekoa’s, written from the text retrieved for the candidate pack on 2026-10-28; it is not a quotation and was not machine-matched. A cross-family machine check (2026-10-30, item 11) re-read the record’s sources and found full support. No human editorial review. Status and meaning Editorial status. Not reviewed by an editor . An exploratory record that no editor has accepted. This status does not say whether a person has read any linked passage. Each evidence record above shows how it was checked.
Relation. One scoped difference between document versions. The claim identifies publisher-stated change, official changelog/redline, or an explicitly inferred comparison. It does not establish implementation, effectiveness or a safety ranking.
Date. Change as stated in the v3.1 change notes, dated by the edition’s publication date.
Record ID ab-fw-fsf-v3-1-cbrn-security-level-2-plus