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SECURITY SCORE
Certificate Information
Subject
CN=reflex.cz
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
October 21, 2025
Valid Until
January 19, 2026
60 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
01:6E:93:84:3D:C3:AA:7F:B0:81:49:14:A6:8E:B2:11:40:49:A8:8D:7C:7A:04:11:1E:5A:52:AD:FA:DA:A4:F3
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
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
- • TLS 1.0 is deprecated and should be disabled
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Basic
upgrade-insecure-requests; default-src; script-src; +5 more
upgrade-insecure-requests; default-src https: blob: wss:; script-src https: 'unsafe-inline' 'unsafe-eval' blob:; style-src https: 'unsafe-inline'; img-src https: data: blob:; media-src https: blob: data:;frame-src https: blob: data:; report-uri /cspreports
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • 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