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Marshall Heilman currently serves as Chief Executive Officer at DTEX Systems since December 2023, following a role as Global Chief Technology Officer at Mandiant within Google from October 2022 to December 2023. Previously, Marshall held the position of Executive Vice President, Managed Defense & Advanced Practices at FireEye, Inc. from May 2017 to August 2021, where the focus was on managed detection and response services. Marshall also spent over a decade at Mandiant as Vice President and CTO, overseeing consulting services for the Western U.S. and ensuring high quality in incident response and cybersecurity services. The career began in the United States Marine Corps as an Information Assurance Officer, managing security compliance and network engineering. Marshall holds an MBA from W. P. Carey School of Business at Arizona State University and a BS in Computer and Information Science from the University of Maryland Global Campus.