About Calamu
Dedicated to eliminating data breaches forever.
Everyday, data is stolen and held for ransom to devastating effect. The same mountain of IP and PII that makes business possible also threatens to damage it beyond repair. It’s clear that traditional data security has become outmatched.
Calamu was founded by cybersecurity experts to solve this worsening problem. Years of R&D led to a breakthrough, data-first security–a technology so effective that data theft becomes obsolete. Even if an attacker gets past your perimeter, with Calamu they get nothing of value–and your data remains safe and accessible, with zero downtime.
Meet our Leadership Team
Ophir Rachman
VP of Engineering
Eric Sites
Chief Software Architect
Nick Ryan
VP Marketing
Joan Dorsey
Head of People
Our mission is to make the cyber world a safer place for business. Calamu's data-first approach helps organizations thrive without fear that their own data will be weaponized against them.
PAUL LEWIS, FOUNDER / CEO
Board of Directors
Lou Ryan (Chairman)
Former CEO & Executive Chairman of Edgewave
Lou Ryan is a serial cybersecurity entrepreneur and investor, with successful exits in his more than 30 years experience leading startup companies. Formerly the CEO and Executive Chairman of Edgewave, and previously of Entercept Security Technology, Lou is an Executive Advisor to Calamu and sits on the Board of Directors.
Stephen Ward
Managing Director at Insight Partners
Stephen Ward is a Managing Director at Insight Partners, focused on investments in cybersecurity. Prior to joining Insight, Stephen was Chief Information Security Officer at The Home Depot, where he provided progressive direction over cybersecurity and technology risk. His innovative approach has led to malware related patented technology and he has received award recognition from his industry peers in cybersecurity.
John Stewart
Former SVP Chief Security & Trust Officer Cisco Systems, Inc.
John Stewart is an angel investor and startup advisor at Talons Ventures, with more than 30 years experience in cybersecurity. Formerly the SVP Chief Security & Trust Officer of Cisco Systems, Inc, he now serves on the Board of Directors at Calamu in addition to serving at TrustMAPP, Quantum Xchange, Blackpoint Cyber, and more.
Advisory Board
Jeffrey Weinstein
Former Chief Growth Officer of Traliant
David Holland
Former SVP & Treasurer of Cisco Systems, Inc
David Schneider
President Emeritus of ServiceNow
Joe Merces
Co-Founder of Cloud Daddy
Marla Crawford
General Counsel of Cimplifi
Patrick Burke
Former Deputy Superintendent of New York State Department of Financial Services
Robin Matlock
Former CMO of VMware