Meta

One incident since 1 January 2026 involving Meta.

Sources last checked 4 Nov 2026; checked weekly.

Date	Lab	What happened	Sources
5 Aug 2026reported	MetaMuse Spark 1.1 (pre-release)	In an Irregular test in early July with the same environment fault, the model exploited a real website and modified its database. Effect: One real website's database was altered. How it became known: the evaluator Irregular identified the case in late July. Meta issued a statement on 5 August and a retrospective on 14 August. Isolation Evaluator accreditation Disclosure clockDiscussed in The box is not the safeguard, Who tests the frontier	Primary laboratorySecondary

Date

Lab

What happened

Sources

5 Aug 2026reported

MetaMuse Spark 1.1 (pre-release)

In an Irregular test in early July with the same environment fault, the model exploited a real website and modified its database.

Effect: One real website's database was altered.

How it became known: the evaluator

Irregular identified the case in late July. Meta issued a statement on 5 August and a retrospective on 14 August.

Isolation Evaluator accreditation Disclosure clockDiscussed in The box is not the safeguard, Who tests the frontier

Primary laboratorySecondary

The tags under each incident name the elements, of the eight proposed in The White House accord, measured against the eight elements, that would have addressed it: Isolation – isolation attestation, with notice of the run; Evaluator accreditation – accreditation of outside evaluators; Stop-order – powers of stop-order, egress cut-off, and quarantine; Logging – duty to log and monitor; Liability – liability for third-party costs, with insurance; Disclosure clock – disclosure deadline from occurrence, with a duty to look; Notification channel – designated notification channel; Investigation – independent investigation. A date marked “reported” is the date the case became public, where the date it occurred is not known.