EnSilo.com is a digital ghost—a 404 error page that still commands a 15,000-strong workforce and $4.4B in revenue. This isn't a startup failure; it's the digital footprint of a cybersecurity giant that was acquired, absorbed, and left to haunt the web.

"A 404 error page that generates millions in revenue isn't a broken website—it's a corporate tombstone with an active security team."

The tech stack tells a story of corporate integration: jQuery, Tailwind CSS, Bootstrap, and Ant Design suggest a modern frontend that's been stripped down to bare essentials. The presence of Zendesk, New Relic, and Adobe Launch reveals this isn't just a parked domain—it's an active, monitored digital asset with enterprise-grade tracking. The domain is a living fossil, preserved in amber while the business moved to Fortinet's main infrastructure.

• EnSilo's endpoint detection and response (EDR) technology now powers Fortinet's Security Fabric
• The domain's 404 status is intentional—a redirect strategy that preserves brand equity while consolidating operations
• The 15,512 employees are now Fortinet staff, but the EnSilo name persists in legal documents and legacy systems