Microsoft now treats the AI agents companies pay for as insider risks. On October 19 it rolled out Guardian Agents, a new layer of Project Perception that watches AI agents at machine speed and…
AspireAI community · blogs.microsoft.com
Microsoft now treats the AI agents companies pay for as insider risks. On October 19 it rolled out Guardian Agents, a new layer of Project Perception that watches AI agents at machine speed and steps in when their risk score rises.
Project Perception first shipped in July as a defender against outside attacks. The October update turns it inward: Microsoft's security chief says frontier models cannot be trusted regardless of who built them.
Microsoft Defender now recognises up to 60 types of agent including Claude Code, Codex and OpenClaw, and can throttle, narrow access, or fully isolate a misbehaving agent. Okta shipped Agent SSO on Sep 22 and ServiceNow added AI Passport on Oct 15, so three identity vendors have shipped agentic security in twenty-seven days.
Caveat: Microsoft is heavily invested in OpenAI and Anthropic, the same labs whose agents it now says to second-guess.
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Two critical PHP remote code execution flaws — one found by GPT-5.6 Sol — were patched on October 21, 2026, and OpenAI published a disclosure framework alongside the fix. Fixed versions: PHP 8.5.12, 8.4.27, 8.3.36 and 8.2.35. Both allow unauthenticated remote code execution, and PHP's advisory says risk is highest for mod_php, where a demonstrated exploit triggers before any application code runs. The CVEs are distinct failure modes. CVE-2026-109618 (OOM corruption): out-of-memory handling can interrupt PHP while internal request data is only partially initialized, and request cleanup may then treat the invalid data as valid. CVE-2026-109619 (stale global state): request-owned internal state can survive after its backing memory is freed, and a later request served by the same worker may use that stale state. OpenAI states GPT-5.6 Sol identified the first flaw through its Patch the Planet initiative, and that Wiz independently discovered and reported both vulnerabilities. PHP's maintainers led the fixes and release, with Wiz, Cloudflare and OpenAI contributing research and coordination. Wiz's write-up adds that it used GPT-5.6 Sol and Gemini 4 Argon throughout, with Gemini 4 Argon contributing to finding the vulnerability and validating the patch. OpenAI describes the gap between discovery and public exploitation as a "Defender's Window," proposes a five-stage response framework, and committed $1 billion in subsidised Daybreak model access for organizations with limited security resources. Honest caveats: these are OpenAI's and Wiz's own characterizations, and OpenAI also notes the same capabilities help attackers build offensive tooling faster. PHP 8.1 and older no longer receive updates from the PHP project.