Microsoft Security Response Center

@msftsecresponse

We are the Microsoft Security Response Center. To report security vulnerabilities or abuse in Microsoft products, visit microsoft.com/en-us/msrc.

Redmond

msrc.microsoft.com/blog/

Joined February 2010

232 Following

145K Followers

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Microsoft Security Response Center
@msftsecresponse
14m
Security researchers play an essential role in helping Microsoft protect customers, and we appreciate the time and expertise that goes into every vulnerability report. Many researchers already provide the detailed, actionable reports our teams need to reproduce and assess
microsoft.com
Introducing Complete and Not Complete report assessments across Microsoft bounty programs
Microsoft Security Response Center
@msftsecresponse
Oct 13
Security updates for October 2026 are now available. Details are here: msrc.microsoft.com/update-guide/ As security update packages address more CVEs, prioritization can become more complex. In a new blog, we explore risk cohorts, an approach to grouping CVEs around shared deployment,
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Microsoft Security Response Center
@msftsecresponse
Oct 6
Server-Side Request Forgery (SSRF) remains one of the most impactful vulnerability classes in cloud environments, where network reachability, identity, and trust boundaries intersect. In our latest blog, we explore how SSRF works, why cloud-hosted environments amplify its
Microsoft Security Response Center
@msftsecresponse
Oct 5
For more than three years, Artem Shymshyrian (@Xtytia0922) pursued bug bounties without receiving one. Instead of giving up, he made a promise to himself: keep going until he earned his first bounty, even if it was only one dollar. That persistence eventually helped Artem become
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Microsoft Security Response Center
@msftsecresponse
Sep 25
Every security researcher starts somewhere. In our latest researcher spotlight, Firas Fatnassi (@Fatnass1F1ras) shares how curiosity, persistence, and a commitment to learning shaped his journey from finding vulnerabilities as a teenager to becoming a respected voice in the
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