altoplan.de
Grade C · 65/100 · 6/7 security headers present
Security Score
Security Headers
CSP Violations
Issues Found
Recommendations
Security
65 / 100Moderate security gaps found — unsafe directives or weak source restrictions.
Compliance
90 / 100CSP implementation follows recommended standards and specifications.
Best Practices
55 / 100Basic practices followed but missing important optimizations.
CSP Analysis
default-src 'none'; base-uri 'self' https://altoplan.de https://www.altoplan.de; child-src 'self'; connect-src 'self'; font-src 'self' data:; form-action 'self'; frame-ancestors 'self'; frame-src 'self'; img-src 'self' data:; manifest-src 'self'; media-src 'self'; object-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'
Directive Analysis
Security Headers
Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.
How to add it:
add_header Cross-Origin-Opener-Policy "same-origin" always;Header always set Cross-Origin-Opener-Policy "same-origin"Rules > Transform Rules > HTTP Response Header Modification > Set Cross-Origin-Opener-Policy to "same-origin"accelerometer=(), autoplay=(), camera=(), encrypted-media=(), fullscreen=(), geolocation=(), gyroscope=(), magnetometer=(), midi=(), microphone=(), payment=(), picture-in-picture=(), sync-xhr=(), usb=()
Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.
no-referrer
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.
SAMEORIGIN
Prevents the page from being embedded in iframes, protecting against clickjacking attacks.
0
Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.
1 recommended security header is missing on altoplan.de.
Issues Found
- •Info: 'data:' URI in font-srcinfo
- •Info: 'data:' URI in img-srcinfo
- •Missing security header: Cross-Origin-Opener-Policymedium
- •No nonces or hashes used for script-srcmedium
- •Unsafe eval() execution allowed in script-srchigh
- •Unsafe inline execution allowed in script-srchigh
- •Unsafe inline execution allowed in style-srchigh
Recommendations
- →Consider implementing a stricter Content Security Policy
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.
altoplan.de
1 scan since 5/31/2026
Latest: 65/100
Total Scans
1
Latest Score
65/100
First Scan
5/31/2026
Last Scan
5/31/2026
Security
65 / 100Moderate security gaps found — unsafe directives or weak source restrictions.
Compliance
90 / 100CSP implementation follows recommended standards and specifications.
Best Practices
55 / 100Basic practices followed but missing important optimizations.
Scan History
| Date | Score | CSP | Headers | Issues | Action |
|---|---|---|---|---|---|
| May 31, 2026 | C (65) | Yes | 6/7 | 7 | View → |
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/altoplan.de" title="Security headers grade for altoplan.de — HeaderTest">
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