At Waterfall, Andrew leads a team of experts who work with the world's most secure industrial enterprises. Before Waterfall, he led the development of high-end industrial control system products at Hewlett-Packard, of IT/OT middleware products at Agilent Technologies, and of the world's first industrial SIEM at Industrial Defender. He is the author of two books on industrial / OT cybersecurity, a co-author of the Industrial Internet Security Framework, and a co-author of the UITP report on cybersecurity requirements in rail system tendering. Andrew co-hosts the Industrial Security Podcast and contributes regularly to industrial security standards and best-practice guidance.