S4E
AI-driven security for everyone, with simple 24/7 protection
S4E launched on September 15, 2025 with 6 votes, #3,421 of 8,160 launches that month. The site was still online in September 2026, 1 year on.
What it does
“S4E delivers AI-driven cybersecurity with CTEM, providing 24/7 protection for businesses and individuals. Affordable, effortless, and designed for everyone, making digital security accessible, reliable, and risk-free.”
S4E is a free cybersecurity platform with 11,000+ vulnerability scanners. Detect SQL injection, XSS, CVEs, misconfigurations and more. No account required to start.
Fast scan covers a limited set of checks. Sign up for full coverage and continuous monitoring. This is what S4E.io found on a public demo domain in a few hours. Professional-grade security scanning accessible to all from solo developers to enterprise teams. No expertise required. Start scanning immediately. No credit card, no account, no waiting. Open ports, CVEs, misconfigurations, exposed credentials the most comprehensive scan available. No agents. No config. No DevOps. Enter a domain and you're protected infrom s4e.io
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