usdtchecker.app
Grade B · 70/100 · 5/7 security headers present
Security Score
Security Headers
CSP Violations
Issues Found
Recommendations
Security
70 / 100Good security foundation but some CSP hardening recommended.
Compliance
82 / 100Mostly compliant but some directives or headers are missing.
Best Practices
20 / 100Best practices largely absent — review CSP configuration.
CSP Analysis
default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; font-src 'self' data:; connect-src 'self' https:; frame-ancestors 'none';
Directive Analysis
Missing Directives
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"geolocation=(), microphone=(), camera=()
Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.
strict-origin-when-cross-origin
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.
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 usdtchecker.app.
Issues Found
- •CRITICAL: 'https:' in connect-src allows scripts from ANY HTTPS domaincritical
- •CRITICAL: 'https:' in img-src allows scripts from ANY HTTPS domaincritical
- •Info: 'data:' URI in font-srcinfo
- •Info: 'data:' URI in img-srcinfo
- •Missing HIGH directive base-uri (Base URI control - prevents base tag injection)high
- •Missing HIGH directive object-src (Plugin control - should be 'none')high
- •Missing MEDIUM directive form-action (Form submission control - prevents form hijacking)medium
- •Missing security header: Cross-Origin-Opener-Policymedium
- •No nonces or hashes used for script-srcmedium
- •Unsafe inline execution allowed in script-srchigh
- •Unsafe inline execution allowed in style-srchigh
Recommendations
- →Add base-uri directive with appropriate restrictions
- →Add form-action directive with appropriate restrictions
- →Add object-src directive with appropriate restrictions
- →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.
usdtchecker.app
5 scans since 6/16/2026
Latest: 70/100
Total Scans
5
Latest Score
70/100
First Scan
6/16/2026
Last Scan
6/22/2026
Security
70 / 100Good security foundation but some CSP hardening recommended.
Compliance
82 / 100Mostly compliant but some directives or headers are missing.
Best Practices
20 / 100Best practices largely absent — review CSP configuration.
Score Trend
Security score progression over 5 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/usdtchecker.app" title="Security headers grade for usdtchecker.app — HeaderTest">
<img src="https://headertest.com/api/badge/usdtchecker.app" alt="HeaderTest security grade: B (70/100) for usdtchecker.app" />
</a>[](https://headertest.com/results/usdtchecker.app)