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Marcus Ranum's picture

Marcus Ranum

Marcus J. Ranum is Chief Security Officer at Tenable Network Security. He is a pioneer in security technology who was one of the early innovators in firewall, VPN, and intrusion detection systems. Since the late 1980s, Marcus designed a number of groundbreaking security products including the DEC SEAL, the TIS firewall toolkit, the Gauntlet firewall, and NFR's Network Flight Recorder intrusion detection system. At Tenable, he is responsible for research in logging tools, product training, and product/best practice evangelism. Prior to Tenable, he served as a consultant to many Fortune 500 firms and national governments. He serves as a technology advisor to a number of start-ups, established concerns, and venture capital groups.

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