Free Website Security Test
Check your website's security posture in seconds. This free test scans your SSL certificate, security headers, HTTPS configuration, cookie security, and more — no account needed.
Test your website now — free
Enter your URL or domain to run a full security scan. Results in under 30 seconds.
What this website security test checks
| Check | What it looks for | Why it matters |
|---|---|---|
| SSL Certificate | Valid cert, expiry date, TLS version | Expired or weak TLS exposes data in transit |
| HTTPS Redirect | HTTP → HTTPS redirect present | Without redirect, users can connect insecurely |
| HSTS | Strict-Transport-Security header | Prevents SSL stripping attacks |
| Content Security Policy | CSP header presence and strength | Mitigates XSS and data injection attacks |
| X-Frame-Options | Clickjacking protection header | Prevents your site from being embedded in iframes |
| Cookie Security | Secure, HttpOnly, SameSite flags | Protects session cookies from theft |
| Open Ports | Exposed databases, RDP, Redis | Publicly accessible services are attack surfaces |
| Server Info | Server/X-Powered-By headers | Revealing tech stack helps attackers target exploits |
What a secure website looks like
example.com — Website Security Score: 94
PASS SSL certificate valid — expires in 89 days, TLS 1.3
PASS HTTPS redirect configured
PASS HSTS enabled — max-age=31536000
PASS Content-Security-Policy header present
PASS X-Frame-Options: DENY
PASS Cookies: Secure + HttpOnly flags set
Common website security issues and how to fix them
CRITICAL SSL certificate expired or expiring soon
Set up auto-renewal via Let's Encrypt or your hosting provider. masoSec alerts you 30 days before expiry.
CRITICAL No HTTPS redirect
Add a redirect in your web server config so all HTTP traffic is sent to HTTPS.
Redirect permanent / https://yourdomain.com/
WARNING Missing HSTS header
Add HSTS to your server response headers to prevent downgrade attacks.
Strict-Transport-Security: max-age=31536000; includeSubDomains
WARNING No Content-Security-Policy
CSP limits which scripts, styles, and resources can load on your page. Start with a report-only policy to see what breaks before enforcing.
WARNING Cookies missing Secure flag
Cookies without the Secure flag can be sent over HTTP. Add Secure; HttpOnly; SameSite=Strict to all session cookies.
Monitor your website security automatically
Security configurations change. SSL certificates expire. Headers get removed after deployments. masoSec runs automatic daily scans and alerts you the moment something breaks.
→ Start Free Website Security MonitoringFrequently asked questions
How do I test my website security for free?
Use the scanner above — enter your URL and get a full report in seconds. No signup required for the basic scan. Create a free account to save results and monitor automatically.
What does a website security scan check?
SSL certificate validity and expiry, TLS version, HTTPS redirect, security headers (HSTS, CSP, X-Frame-Options), cookie flags, server info exposure, open ports, and more.
How often should I run a website security test?
At minimum monthly. Ideally continuous — masoSec monitors daily and alerts you to any change so you never miss a configuration drift.
What is a good website security score?
80+ is good, 90+ is excellent. The most common issues pulling scores down are missing HSTS, no CSP, and cookies without Secure flags.