David J. Malan is a prominent figure in computer science education, serving as the Gordon McKay Professor of the Practice of Computer Science at Harvard University. He is best known for teaching CS50, Harvard's introductory computer science course, which has become one of the university's largest and most popular offerings. Malan's teaching extends beyond Harvard, as CS50 is also taught at Yale University and is available as a massive open online course (MOOC) on edX, attracting millions of learners worldwide. His expertise spans various areas of computer science, including cybersecurity, digital forensics, and computer science education. Malan's journey in computer science began as a student at Harvard, where he initially studied government before discovering his passion for programming through CS50. He went on to earn his bachelor's, master's, and doctoral degrees in computer science from Harvard. In addition to his work at Harvard's School of Engineering and Applied Sciences, Malan is a member of the Faculty of Education in the Graduate School of Education and teaches at Harvard Business School, Harvard Law School, Harvard Extension School, and Harvard Summer School. His innovative teaching methods, engaging lectures, and commitment to making computer science accessible to all have earned him recognition as a leading educator in the field.