CuraSec

tag: Phaas · 1 items

2026-09-23 · Microsoft Security Blog · source ↗ #device-code-phishing#token-theft#phaas
  • Engineer — Plan: Device code phishing industrialization is a signal to audit whether OAuth device code flow is enabled in your Entra ID / identity provider — restrict it to only necessary clients and enforce conditional access policies that block token reuse from unexpected locations.
  • SOC/IR — Act: EvilTokens was actively stealing tokens at scale via device code flow; hunt for anomalous device code authentication requests in your identity logs (Entra Sign-in logs, unified audit log) since at least early 2026, and tune detections for device code grants issued to unfamiliar device types or followed by token use from new geographies.
  • Leader — Learn: The Microsoft DCU-led disruption illustrates how AI-assisted PhaaS platforms are lowering the bar for credential and token theft campaigns; useful context for the next board or risk-committee briefing on evolving phishing sophistication.