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just now
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SECURITY SCORE
Certificate Information
Subject
CN=gradedblue.com
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
December 06, 2025
Valid Until
March 06, 2026
41 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
78:50:9C:BB:22:23:72:CE:5D:7C:49:EF:C1:3B:7B:39:7E:F3:F6:CD:CC:06:B1:5A:93:DB:8D:BC:62:8D:05:74
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Good
default-src; script-src; style-src; +8 more
default-src 'self';script-src 'self' https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js https://browser.sentry-cdn.com https://static.cloudflareinsights.com 'report-sample';style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com https://fonts.googleapis.com;font-src 'self' https://fonts.gstatic.com;connect-src 'self' https://gradedblue.com https://sentry.io https://cloudflareinsights.com;img-src 'self' https://cdn.gradedblue.com https://www.gstatic.com;media-src 'self' https://cdn.gradedblue.com;object-src 'none';form-action 'none';base-uri 'self';report-uri https://sentry.io/api/4530477/security/?sentry_key=ca2b7a4a66cc4546a03cd4a5daeb8af4
X-Frame-Options
Excellent
deny
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Strengthen CSP by removing 'unsafe-eval'
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports