Global Head of Detection and Response at Marsh McLennan,Co-Founder at THOR Collective
Lauren Proehl is the Global Head of Detection and Response at Marsh McLennan. She is an experienced incident responder and threat hunter who has helped identify and mitigate cyber adversaries in Fortune 500 networks. After leading investigations ranging from data breaches to targeted attacks, she now works to define some part of the limitless unknowns in cyberspace and make cybersecurity less abstract, and more tangible. Lauren sits on the CFP board for BSides Kansas City, heads up SecKC parties, and tries to escape computers by running long distances in the woods.
Friday | Aug
8th2025
DEF CON Creator Stage 2 (Room 232) | Las Vegas Convention Center
Adversary Village Panel
Purple Teaming
Purple teaming is no longer just about red meets blue, it is about shared intelligence, continuous collaboration, and realistic adversary emulation. In this panel, we explore how modern security teams are moving from siloed operations to unified strategies that reflect how real attackers operate.
By rethinking purple teaming as a proactive, intelligence-driven discipline, organizations can uncover detection gaps, improve response times, and drive measurable improvements in their defenses. Join us as we unpack how aligning offensive and defensive teams unlocks the full potential of purple teaming and leads to lasting security impact.
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