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Security

Since the firm’s founding over 20 years ago, we have invested in some of the most innovative and significant technology companies of our time. Sigma knows what it takes to help entrepreneurs turn creative ideas into sustainable businesses.

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Centrify Corporation
Centrify’s auditing, access control and identity management solutions secure cross-platform systems, databases, and web and enterprise applications using Microsoft Active Directory. The Centrify Suite improves IT efficiency, strengthens regulatory compliance, and centrally audits and controls access to a heterogeneous environment.
CEO: Thomas Kemp
Managing Director: Peter Solvik
Mountain View, CA
Damballa, Inc.
Damballa provides real-time protection and remediation against bot-driven targeted attacks that evade other security technologies. Our approach monitors the Command-and-Control needed to launch attacks across the Internet so enterprise organizations can identify compromised systems in real-time and eliminate malicious activity.
CEO: Val Rahmani
Managing Director: John Mandile
Atlanta, GA
Fortify Software, Inc.
Fortify Software products protect companies from operational, financial and reputation threats by preventing security problems at the source of those risks: the software applications themselves.
President & CEO: John M. Jack
Managing Director: Bob Spinner
San Mateo, CA
Oversight Systems, Inc.
Monitors business processes with real-time detective controls. Oversight's Continuous Controls Monitoring solutions analyze activities across multiple financial systems to reduce compliance costs, minimize financial loss and boost operational efficiency.
CEO & co-founder: Patrick Taylor
Managing Director: John Mandile
Atlanta, GA
Trustwave
Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world.
CEO & President: Robert J. McCullen
Managing Director: Robert E. Davoli
Chicago, IL
Vormetric, Inc.
Developing the industry's first storage security appliances that provide transparent information-centric protection of all stored data accessible via networks.
President & CEO: Richard Gorman
Managing Director: Bob Spinner
Santa Clara, CA