Windows Defender — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
35
occurrences
First Seen
November 3, 2025
Last Seen
July 22, 2026

Windows Defender is a technology platform tracked across 27 threat clusters and 35 intelligence report mentions on ThreatCluster. First observed November 3, 2025; most recent activity July 22, 2026.

Related Threat Clusters

Recent Intelligence Reports

  • The July 2026 Security Update Review — www.zerodayinitiative.com · July 22, 2026
  • Microsoft Reins in RoguePlanet Zero — Darkreading · July 9, 2026
  • Microsoft releases fix for RoguePlanet Defender flaw (CVE-2026-50656) — Feeds2.Feedburner · July 9, 2026
  • Nightmare-Eclipse Drops Yet Another Microsoft Exploit, RoguePlanet — Darkreading · June 10, 2026
  • Microsoft Patch Tuesday June 2026: Record 208 CVEs, Wormable Kernel Flaw Demands Patching — Techtimes · June 10, 2026
  • New Windows Defender 0-Day Exploit “RoguePlanet” Lets Attackers Gain SYSTEM — Cybersecuritynews · June 10, 2026
  • Rogue security researcher banned on GitHub — Cybernews · May 25, 2026
  • Picus Security: BlueHammer & RedSun — www.picussecurity.com · May 21, 2026

CVSS v3.1 Breakdown