Extreme TLDR: Check Point Research uncovered vulnerabilities in Microsoft Teams allowing impersonation, message manipulation, and notification spoofing by both outsiders and insiders, risking trust and security for over 320 million users. Microsoft fixed these in 2024-2025 after responsible disclosure. Effective defense requires multi-layered security, user training, and awareness of social engineering threats.
Exploiting Microsoft Teams: Impersonation and Spoofing Vulnerabilities Exposed Microsoft Teams Vulnerabilities Uncovered
