Attackers exploited zero-day vulnerabilities across major business platforms, while advanced threats abused trusted SaaS APIs, public code repositories, and physical surveillance devices. Today’s digest spotlights the risks of exposure windows, supply chain compromise, and the urgent need for accelerated patching and monitoring.
Microsoft 365
Cybersecurity Daily Briefing: May 18, 2026
Active zero-day exploits, phishing attacks targeting M365 OAuth, and critical vendor vulnerabilities mark major risk shifts across both infrastructure and cloud this week. Organizations must move quickly to patch newly disclosed issues, audit privileged access, and adapt monitoring to evolving attacker techniques.