David A. Wheeler serves as the Director of Open Source Supply Chain Security at the Linux Foundation, bringing decades of expertise in secure software development and open source software (OSS). His significant contributions include authoring the influential "Secure Programming HOWTO" and pioneering work on countering malicious tools through Diverse Double-Compiling (DDC). As an adjunct professor at George Mason University, he teaches graduate courses in secure software development while leading the OpenSSF Best Practices Badge project at the Linux Foundation. His academic credentials include a Ph.D. in Information Technology, a Master's in Computer Science, certificates in Information Security and Software Engineering, and a B.S. in Electronics Engineering, all from George Mason University. A Certified Information Systems Security Professional (CISSP) and IEEE Senior Member, Wheeler has significantly influenced OSS security through his work with the National Information Assurance Partnership and contributions to the U.S. Department of Defense's OSS policy. His research and publications on secure software development, open source evaluation, and supply chain security continue to shape industry standards and practices.