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Additional security resources

Windows Defender Security Intelligence

Discover the world-class research and security intelligence used to protect devices from malicious attacks.

Microsoft Trust Center

Learn how we support security, compliance, and privacy in all our cloud products and services.

Microsoft security bulletins

Stay up to date with security vulnerabilities reported by the Microsoft Security Response Center (MSRC).

Security update guide

Read the authoritative source of information on Microsoft security updates.

Malware analysis submission portal

Report malware or files you believe have been incorrectly classified as malware.

Microsoft Security Response Center

Report security issues, bugs, and learn about the latest security fixes from our MSRC blog.

Security development lifecycle

Get guidance, best practices, tools, and processes for security and privacy considerations.