Ryan Kalember

Proofpoint, Inc. engages in provision of security-as-a-service that enables large and mid-sized organizations worldwide to defend, protect, archive and govern their most sensitive data. The firm's security and compliance platform comprises of an integrated suite of threat protection, information protection, and brand protection solutions. Its solutions also includes email protection, advanced threat protection, email authentication, data loss prevention, SaaS application protection, response orchestration and automation, digital risk, web browser isolation, email encryption, archiving, eDiscovery, supervision, secure communication, phishing simulation and security awareness computer-based training. The company was founded by Eric Hahn in May 2002 and is headquartered in Sunnyvale, CA.

Guardent, Inc. develops managed security software systems. The company is based in Waltham, MA. The company was founded by Maria A. Cirino, Dan McCall, Ryan Kalember. Guardent was acquired by VeriSign, Inc. on February 27, 2004 for $135 million.

ArcSight, Inc. use to provides security and compliance management solutions that identify and mitigate cyber threat and risk for businesses and government agencies. It use to offers compliance reporting, universal log management, data leak monitoring, breach detection and perimeter security intelligence. It was founded in 2000 and was headquartered in Cupertino, CA.

WatchDox, Inc. develops control, tracking, and document protection software solutions. It offers secure enterprise file-sync-and-share (EFSS) solutions to protect, share, and collaborate files on any device. The firm also provides reporting on document access and use for compliance and analytics. The company was founded by Noam Livnat and Moti Rafalin in 2007 and is headquartered in Palo Alto, CA.