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June 25, 2025 42 mins
In this episode of The BlueHat Podcast, host Nic Fillingham and Wendy Zenone are joined by Mike Macelletti from Microsoft’s MSRC Vulnerabilities and Mitigations team to explore Redirection Guard, a powerful mitigation designed to tackle a long-standing class of file path redirection vulnerabilities in Windows. Mike shares how his interest in security began, the journey behind developing Redirection Guard, and how it's helping reduce a once-common bug class across Microsoft products. He also explains how the feature works, why it's impactful, and what developers can do to adopt it. Plus, a few fun detours into Solitaire hacking, skiing, and protein powder.     In This Episode You Will Learn:   What Redirection Guard is and how it helps prevent file system vulnerabilities  How Microsoft identifies and addresses common bug classes across their ecosystem  Why some vulnerabilities still slip past Redirection Guard and what’s out of scope    Some Questions We Ask:  What is a junction and how is it different from other redirects?  How does Redirection Guard decide which shortcuts to block?  Are there vulnerabilities Redirection Guard doesn’t cover?      Resources:       View Mike Macelletti on LinkedIn      View Wendy Zenone on LinkedIn    View Nic Fillingham on LinkedIn     Related Microsoft Podcasts:    Microsoft Threat Intelligence Podcast    Afternoon Cyber Tea with Ann Johnson    Uncovering Hidden Risks       Discover and follow other Microsoft podcasts at microsoft.com/podcasts      The BlueHat Podcast is produced by Microsoft and distributed as part of N2K media network.  
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