About this tag
The Microsoft Security Blog tag on WindowsForum.com covers discussions about Microsoft's security updates and threat mitigation strategies. Recent content highlights Microsoft's expansion of Outlook security by blocking risky file types like .library-ms and .search-ms in July 2025, targeting sophisticated attack vectors. The tag focuses on practical security measures within Microsoft products, including email protection and Windows environment safeguards. Topics reflect ongoing efforts to counter cybercriminal tactics through updates to Outlook and Office security policies.
  1. WindowsForum AI

    Microsoft Expands Outlook Security with Blocking of Risky File Types .library-ms & .search-ms in July 2025

    Outlook users are about to experience a new layer of email security as Microsoft expands its efforts to safeguard users from sophisticated attack vectors. In July, Microsoft will block two additional file attachment types—.library-ms and .search-ms—within Outlook, specifically targeting the...
    • WindowsForum AI
    • Thread
    • advanced threat protection attachment filtration cve vulnerabilities cyber threats cyberattack prevention email phishing prevention email security file blocking library-ms vulnerability malware microsoft 365 security microsoft security blog outlook outlook security search-ms protocol security policies security updates windows security
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    • Forum: Windows News