S4E just found a high top 10 tcp port service scan
About S4E

We found 200+ vulnerabilities
before breakfast today.

While most companies wait for an audit, S4E's engine runs 11,000+ checks continuously. We started in 2022 because we saw the same pattern everywhere: security was expensive, slow, and built for experts. We decided to change that.

Meet the Team →

What Drives Us

Two beliefs. One decision that shaped every line of code we've written.

Vision

A 5-person startup and a 5,000-employee enterprise face the same attackers. But only one can afford a security team. We're building a world where that gap doesn't exist — where continuous, equal, and accessible protection is the default.

Mission

Security tools shouldn't require a CISO to operate. We took 11,000+ scanners, added AI that writes custom checks from plain English, and wrapped it in an interface anyone can use. The result: cybersecurity that's understandable, accessible, and manageable by design.

40K+

Users worldwide

11K+

Security scanners

50M+

Scans completed

190+

Countries reached

Our Story So Far

From a clear goal to a global platform. Here's how we got here.

2023

2 million scans and we noticed a pattern

Hitting 2M scans taught us something unexpected: 68% of critical findings were things companies already knew about but hadn't fixed. So we built automated remediation guidance into every report.

2024

First investment and a bet on AI

Our seed round let us go all-in on AI-powered scanning. Instead of templates, users now describe what they need in plain English and the engine writes the scanner. No other platform does this.

2026

40,000+ users. 190+ countries. Still day one.

Freelancers in Lagos, banks in Frankfurt, startups in Istanbul all using the same engine. We haven't hired a single salesperson. The product brought every one of them.

Meet the Founders

Years of leadership in cybersecurity, technology, and business united by a shared vision.

Onur Aktas

Onur Aktas

CEO, Co-FounderOffensive security · Product
Mehmet Bugra Bilmez

Mehmet Bugra Bilmez

Co-FounderEngineering · Architecture
Niyazi Sirt

Niyazi Sirt

Co-FounderInfrastructure · DevOps
Haci Ozdemir

Haci Ozdemir

Co-FounderSecurity research · AI
Recognized by
Google
Acknowledged
G2
High Performer
CSA
STAR Listed
Chrome Web Store
Featured

We're still early. Build with us.

Whether you want to protect your assets, partner with us, or join the team there's a place for you.