By LinkedInEditors
Publication Date: 2025-12-24 21:00:00
Microsoft has announced that it will significantly tighten default messaging security protections in Microsoft Teams beginning in January 2026, a move aimed at reducing the growing risk of phishing, malware distribution, and other social-engineering attacks targeting workplace collaboration platforms.
According to an update published in the Microsoft 365 Message Center, the company will automatically enable enhanced messaging safety features for Teams tenants that are still running with default configurations and have not previously customized their security settings. The rollout is scheduled to begin on January 12, 2026, giving organizations roughly a year to review and adjust their configurations if they wish to opt out or apply alternative controls.
“We’re improving messaging security in Microsoft Teams by enabling key…
