Microsoft Teams Security Scare: How Hackers Could Have Fooled Us All!
Microsoft Teams security vulnerabilities let attackers impersonate executives, alter chat histories, and fake notifications. Check Point Research found that attackers could tamper with conversations, leaving almost no trace. Microsoft addressed these issues after disclosure in 2024, rolling out patches over several months. Collaboration tools remain prime targets for attackers.

Hot Take:
Microsoft Teams went from being your friendly neighborhood office companion to a potential corporate espionage tool faster than you can say “Zoom fatigue.” With attackers playing executive dress-up and editing chats like they’re reworking their high school essays, it’s a wonder we’re not all just going back to carrier pigeons. I mean, who needs trust in the digital age anyway?
Key Points:
- Microsoft Teams contained vulnerabilities allowing attackers to impersonate executives and alter chat histories.
- The flaws were uncovered by Check Point Research, emphasizing the trust-based design flaws.
- Attackers could edit messages without the “Edited” tag, and spoof notifications to appear from trusted sources.
- Vulnerabilities included altering display names in private chats and call notifications.
- Microsoft patched these issues by late October 2025, with automatic updates for users.
