Four critical vulnerabilities in Microsoft Teams enable attackers to impersonate executives and manipulate messages and notifications, undermining trust. Discovered by Check Point Research, these flaws can be exploited by both external guest users and malicious insiders, posing real risks such as financial fraud and misinformation campaigns. Microsoft addressed these vulnerabilities by October 2025, significantly improving the security of its communication platform.
The discovered issues include the ability to edit messages without detection, manipulate message notification displays, alter display names in chats, and forge caller identities during video calls. These vulnerabilities highlight the challenges of securing modern collaboration tools, as attackers can exploit inherent trust in communication platforms to carry out sophisticated social engineering attacks. Organizations using Teams must implement additional security measures to mitigate these risks, including Zero Trust access controls and user verification protocols.
👉 Pročitaj original: Check Point Research
