ternac.net
Grade A+ · 100/100 · 6/7 security headers present
Security Score
Security Headers
CSP Violations
Issues Found
Recommendations
Security
100 / 100Excellent security posture with strong CSP protections in place.
Compliance
100 / 100CSP implementation follows recommended standards and specifications.
Best Practices
80 / 100Good practices in place but missing some important optimizations.
CSP Analysis
default-src 'self'; script-src 'self' 'nonce-5efc4a4b83360d76443d22411255064b'; style-src 'self' 'nonce-5efc4a4b83360d76443d22411255064b'; font-src 'self' https://cdn.jsdelivr.net/npm/; img-src 'self' data: blob:; connect-src 'self'; frame-src 'none'; object-src 'none'; frame-ancestors 'none'; form-action 'self'; base-uri 'none'
Directive Analysis
Security Headers
same-origin
Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.
sync-xhr=(),fullscreen=(self)
Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.
strict-origin
Controls how much referrer information is sent with requests, preventing data leaks to third parties.
max-age=31536000; includeSubDomains
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.
Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.
Issues Found
- •Info: 'blob:' URI in img-srcinfo
- •Info: 'data:' URI in img-srcinfo
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.
ternac.net
1 scan since 11/3/2026
Latest: 100/100
Total Scans
1
Latest Score
100/100
First Scan
11/3/2026
Last Scan
11/3/2026
Security
100 / 100Excellent security posture with strong CSP protections in place.
Compliance
100 / 100CSP implementation follows recommended standards and specifications.
Best Practices
80 / 100Good practices in place but missing some important optimizations.
Scan History
| Date | Score | CSP | Headers | Issues | Action |
|---|---|---|---|---|---|
| Nov 3, 2026 | A+ (100) | Yes | 6/7 | 2 | View → |
Show off your security grade
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