William Peteroy

CEO and Co-Founder

William has over a decade of experience in network and software security. Prior to co-founding ICEBRG, William worked in a number of business and technical leadership positions as a Technical Lead, Technical Director and Subject Matter Expert for the Department of Defense (DoD) as well as a Security Strategist at Microsoft. While at Microsoft, he represented the Microsoft Security Response Center on Microsoft’s Crypto Board, focusing on encryption and privacy, including driving the deprecation of RC4 and SHA1 in Windows 8.1 and Windows 10. William holds a Master's of Science in Engineering and Computer Science from the Johns Hopkins Whiting School of Engineering and served as an instructor at the National Cryptologic School at Fort Meade, a researcher at Dartmouth College and speaks regularly at global information security conferences including RECON, DerbyCon, SECTOR, Kiwicon and ACSC.

Josh Carlson

CTO and Co-Founder

With more than 15 years of experience in security, at the Department of Defense (DoD) and Microsoft, Josh has a passion for building teams and products that enable security operations. Early in his career at DoD, Josh grew up in Tailored Access Operations (TAO) and later moved on to become a Technical Director for the Chief Science Officer (CSO), where he focused on special projects for cyber defense operations. He led security response for Microsoft’s Trustworthy Computing Group, Windows platform and then a Senior Manager of Breach Response in XBOX.

Icebrg in the News

ICEBRG is now Gigamon Insight. Visit the new product page for an overview.


Gigamon Inc. (“Gigamon”) announced the acquisition of ICEBRG, a Seattle-based security company.


Network Security Company,, Secures $2.5 million in Seed Financing from Madrona Venture Group and Formation 8


Security Startup ICEBRG Announces $10 million in Series A Financing

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If you’re interested in working together, we’d love to hear from you.

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