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No passage recording a change to the CBRN weapons capability thresholds was found in the change log of the Frontier Governance Framework of February 2026 within the inspected scope. Copy claim link
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Machine-checked, not reviewed by an editor Inferred Supported
Supporting evidence: primary · 1 source
Reasoning and premises Premises: the inspected scope was the whole of Appendix II – Change log on PDF p. 16 (printed p. 15), whose February 2026 entry lists six changes. Method: the search terms “CBRN”, “chemical”, “biological” and “threshold” applied to the normalised text of the entry. The entry names the addition of harmful manipulation and loss of control as tracked high-risk capabilities, the update cadence, the scope of the framework, the cadence of deeper capability assessment, a definition of substantially fine-tuned models, and other edits for clarity. The record means not found within that scope.
Provision Revision · provision ID msfgf-changelog-cbrn-entry Subject version Feb 2026 · Publication date unknown · Effective date not established · Revised 2026-02 Date 2026-02 · revision Scope and limits A recorded absence in one named part of one edition. It is not a finding that the CBRN thresholds are unchanged: this record does not compare the two editions’ Critical CBRN rows, and the pack’s record of that comparison is not admitted here. It says nothing about other parts of the edition or about practice.
The evidence 01 primary source Supports the claim
Frontier Governance Framework — February 2026 ↗ Microsoft · Publication date unknown
Archived copy, captured 2026-04-24: Frontier Governance Framework — February 2026 ↗
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Paraphrase Within the inspected scope, no bullet of the February 2026 change-log entry names the CBRN weapons capability thresholds or a change to them.
Location in source PDF p. 16 (printed p. 15), Appendix II – Change log, entry “February 2026”, all six bullets
How it was read Retrieved directly from the publisher
Machine-checked · 2026-10-30
Source details and check notes Authors Microsoft Version Frontier Governance Framework, February 2026 edition (change log entry dated February 2026). The file served at the recorded address (last modified 2026-03-24) is byte-identical to the Internet Archive capture of 2026-04-24, the earliest located; a separate publication date was not established. Version date 2026-02 Canonical address Open the canonical source ↗ Accessed 2026-10-03 Language English (en) Archive copy Open archived copy, captured 2026-04-24: Frontier Governance Framework — February 2026 ↗ . An archive copy shows only what the archive retrieved on 2026-04-24. It does not prove what the page said earlier, and it can differ from the copy checked on 2026-10-03.Attribution Microsoft, Frontier Governance Framework (February 2026). 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 10) 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. A recorded absence: within the stated locator scope of an exact edition, no passage stating the keyed provision was found. It is not an inferred deletion and says nothing about other documents, practice or intent.
Date. Provision as stated in this edition, dated by the edition’s revision month.
Record ID ab-fw-ms-fgf-2026-changelog-no-cbrn-entry