Microsoft Teams Flaw in Guest Chat Exposes Users to Malware Attacks
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Summary
New research highlights a significant security vulnerability in Microsoft Teams B2B Guest Access, allowing attackers to circumvent Defender for Office 365 protections with just a single invitation. This flaw poses a serious risk of malware attacks on users, emphasizing the need for immediate attention to security protocols within the platform.
Impact
Microsoft Teams B2B Guest Access, Defender for Office 365
In the Wild
Unknown
Timeline
Newly disclosed
Remediation
Users should review and tighten guest access permissions in Microsoft Teams, implement additional security measures, and monitor for suspicious activities. Regular updates and patches for Defender for Office 365 should also be applied as they become available.