Its direct-routed Zero Trust software promised to remove the chokepoints created by legacy VPNs. After a public-market detour ended in Chapter 11, Appgate is testing whether a cleaner balance sheet can do the same for the business.
Lookout is a San Francisco-founded cybersecurity company focused on mobile endpoint security and threat intelligence for enterprises and government agencies. Built on one of the world's largest mobile security datasets - hundreds of millions of devices and apps - Lookout detects phishing, smishing, malicious apps, device compromise and social-engineering attacks that target the smartphones people use for work. After divesting its consumer business in 2023 and its cloud SSE business to Fortra in 2025, Lookout is now a pure-play enterprise mobile security vendor led by CEO and Chairman Jim Dolce.
Bastille Networks is a San Francisco-based cybersecurity company that secures the wireless airspace - the radio frequency spectrum inside corporate and government facilities that traditional network security tools never see. Using patented software-defined radio and machine learning, Bastille passively detects, identifies, and locates every cellular, Bluetooth, Wi-Fi, and IoT device in a building, including rogue phones and devices not connected to the network. The company serves Fortune 100 firms, financial institutions, and the U.S. intelligence community, and raised a $44M Series C led by Goldman Sachs Asset Management in January 2024.
QuSecure is a San Mateo, California cybersecurity company that helps organizations defend against the threat that quantum computers pose to today's encryption. Its flagship platform, QuProtect, is a crypto-agility layer that discovers an organization's cryptographic assets and lets them migrate to NIST-standardized post-quantum cryptography without ripping out existing infrastructure or rewriting code. Founded in 2019 and led by CEO Rebecca Krauthamer, QuSecure has demonstrated quantum-resilient communications over live satellite links, won U.S. Army and Air Force contracts, and was named a 2026 World Economic Forum Technology Pioneer.