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SECURITY SCORE
Certificate Information
Subject
CN=*.d2.pl
Issuer
C=PL, O=Unizeto Technologies S.A., OU=Certum Certification Authority, CN=Certum Domain Validation CA SHA2
Valid From
May 05, 2025
Valid Until
May 05, 2026
152 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
12:53:86:85:41:DB:15:1F:1F:F8:5B:DF:C1:8F:A6:10:04:02:09:64:93:14:74:A3:98:85:E3:4E:77:8B:89:7A
Alternative Names
Security Configuration
TLS Protocols
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=63072000;
Content-Security-Policy
Basic
frame-ancestors; script-src; object-src; +3 more
frame-ancestors 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://blueimp.github.io *.youtube.com *.jquery.com *.toast.com *.jsdelivr.net *.datatables.net *.cloudflare.com https://unpkg.com https://snap.licdn.com *.linkedin.com *.lh.pl *.googletagmanager.com *.facebook.net *.google-analytics.com *.doubleclick.net *.google.com *.gstatic.com www.googleadservices.com; object-src 'none'; style-src 'self' 'unsafe-inline' *.toast.com *.linkedin.com *.googleapis.com *.jsdelivr.net *.datatables.net *.cloudflare.com https://unpkg.com; img-src 'self' *.linkedin.com *.jsdelivr.net *.datatables.net *.cloudflare.com https://unpkg.com *.lh.pl *.ytimg.com *.googletagmanager.com *.facebook.net *.google-analytics.com *.doubleclick.net *.google.com *.gstatic.com www.googleadservices.com data: *.google.pl *.google.com *.google-analytics.com *.facebook.com; font-src 'self' *.gstatic.com;
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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