semb.ee
Grade A+ · 100/100 · 6/6 security headers present
Security Score
Security Headers
CSP Violations
Issues Found
Recommendations
CSP Analysis
frame-ancestors 'self'; upgrade-insecure-requests; object-src 'none'; script-src 'sha256-7/fy7EjXUskn9MLHbin/b0A7LQ32mACPQ2SdNj/O/vA=' 'unsafe-inline'; require-trusted-types-for 'script';
Directive Analysis
Security Headers
accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.
no-referrer-when-downgrade
Controls how much referrer information is sent with requests, preventing data leaks to third parties.
max-age=31536000; includeSubDomains; preload
Forces browsers to use HTTPS for all future requests, preventing man-in-the-middle attacks and SSL stripping.
nosniff
Prevents browsers from MIME-sniffing responses away from the declared Content-Type, blocking drive-by downloads.
DENY
Prevents the page from being embedded in iframes, protecting against clickjacking attacks.
1; mode=block
Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.
Beyond headers: infrastructure exposure
via OSN, our sister projectSecurity headers protect the browser. OSN maps what's exposed underneath — servers, open ports, known CVEs, DNS and WHOIS.
semb.ee
3 scans since 7/19/2025
Latest: 100/100
Total Scans
3
Latest Score
100/100
First Scan
7/19/2025
Last Scan
7/19/2025
Score Trend
Security score progression over 2 scans
Show off your security grade
Embed this badge on your site or README. It updates automatically after each scan and links back to this report.
<a href="https://headertest.com/results/semb.ee" title="Security headers grade for semb.ee — HeaderTest">
<img src="https://headertest.com/api/badge/semb.ee" alt="HeaderTest security grade: A+ (100/100) for semb.ee" />
</a>[](https://headertest.com/results/semb.ee)