Michael Horn

Level 3 Parent LLC engages in the provision of integrated communications services. The firm offers internet protocol and data such as internet, virtual private network (VPN), Ethernet, content delivery network (CDN), media delivery, vyvx broadcast, managed, and cloud and information technology; and transport and fiber including voice, colocation and data center and security services. It distributes its products to enterprise, content, government and wholesale customers. The company was founded by Kevin J. O'Hara in 1941 and is headquartered in Broomfield, CO.

Virtela Technology Services, Inc. provides network and security solutions. It provides cloud, network, security, mobility, information technology and infrastructure management services. The company was founded by Brain Wilkove and Vab Goel in April 2000 and is headquartered in Greenwood Village, CO.

NetCitadel, Inc. develops software-defined security for cloud computing services. It offers patented security technologies to build automation tools for the datacenters. The company was founded by Michael Horn, Theron Tock, Vadim Kurland and Surya Koneru in August 2002 and is headquartered in Mountain View, CA.

Vidder, Inc. develops network security solutions based on the software defined perimeter standard. It offers software defined perimeter, software defined security, enterprise security, next generation network access control, network security, cloud migration, multifactor authentication, server vulnerability protection and credential theft protection. The company was founded in 2005 by by John S. McFarlane, Junaid Islam and Carl Williams and is headquartered in Campbell, CA.

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.