Accelerating detection engineering using AI-assisted synthetic attack logs generation

Collection of Microsoft Security Blog posts (May 2026) covering advances and active threats: research and tooling to generate AI-assisted synthetic attack telemetry to accelerate detection engineering; announcement of MDASH, a multi-model agentic security scanning system; guidance on defending consumer web properties from modern DDoS; a Microsoft Incident Response case study on a stealthy third‑party compromise; an actively exploited Linux local privilege escalation named “Dirty Frag” that enables reliable escalation to root; discovery of prompt‑injection leading to RCE in AI agent frameworks;