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Meta Muse turns a consumer AI assistant into a persistent agent — and its first Mac zero-day tests the containment model

Muse packages persistent autonomous execution, credentials, payments, app access and memory into a mainstream consumer product. A September macOS hotfix now provides an early real-world lesson: agent containment has to protect not only the cloud runtime but also the local control path into the agent.

GitSpawn shows how a repository’s own Git config can escape AI coding-agent safety boundaries

The useful lesson is architectural rather than vendor-specific: coding agents inherit execution paths from ordinary developer tooling. If an agent shells out to Git without sanitising repository-local configuration, a hidden `.git/config` can become a host-level command channel that bypasses the controls users think govern the model.

Meta’s approved U.S. teen settlement makes daily limits and nighttime blocks default on Instagram and Facebook

The settlement has crossed from proposed agreement to approved operating constraint. Meta now says the two-hour limit counts activity across Facebook, Instagram and detected multiple accounts, while teens also gain controls for non-algorithmic feeds and autoplay; most terms are required to remain in place for ten years.