An antivirus company is moving into the space between a convincing message and a costly click. ReasonLabs’ wager: home security has to protect the person as well as the machine.
A former malware researcher noticed that the dangerous thing was often the page, not the file. SlashNext followed the bait from inbox to browser to phone - and Varonis paid about $106 million to bring that view into its security platform.
Paubox built a healthcare security business around a simple observation: if protection depends on remembering a button, somebody will forget. Its answer was to make the ordinary inbox do the safe thing automatically.

The internet taught machines to behave like people. Arkose Labs built a business by making the badly behaved ones pay for the privilege.
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.
Trustifi is a cloud-based, AI-driven email security company that protects organizations from phishing, business email compromise, data leaks and compliance failures. Its one-stack platform pairs Inbound Shield threat detection with Outbound Shield one-click encryption and One-Click Compliance, making enterprise-grade email protection simple enough for small businesses and the managed service providers that serve them. Founded by Rom Hendler and Idan Udi Edry, the company raised a $25M Series A in 2025 to scale its channel-first, AI-powered platform.
Barracuda Networks is a cybersecurity company based in Campbell, California that protects more than 200,000 organizations worldwide. It packages email protection, application and network security, data protection and managed detection and response into the AI-powered BarracudaONE platform, sold largely through a global network of managed service providers and channel partners.