Open
Cached
·
just now
90/100
SECURITY SCORE
Certificate Information
Subject
CN=gigaserver.cz
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 06, 2025
Valid Until
March 06, 2026
71 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
C4:93:FA:14:02:EF:3F:DC:07:D9:47:88:12:4E:E6:F3:35:95:FF:D4:6E:97:F5:14:E9:FB:E7:5A:64:D9:52:E5
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
Present
max-age=31536000; preload
Content-Security-Policy
Basic
base-uri; default-src; connect-src; +11 more
base-uri 'self';default-src 'self';connect-src 'self' chat.gigaserver.cz wss://chat.gigaserver.cz region1.analytics.google.com www.google.cz www.google.com www.google-analytics.com www.paypal.com stats.g.doubleclick.net analytics.google.com pagead2.googlesyndication.com region1.google-analytics.com googleads.g.doubleclick.net sentry.gigaserver.cz browser.sentry-cdn.com umami.gigaserver.cz cdn.jsdelivr.net blob:;font-src 'self' chat.gigaserver.cz fonts.gstatic.com;form-action 'self';frame-ancestors 'self';frame-src 'self' www.googletagmanager.com www.google.com www.sandbox.paypal.com www.paypal.com td.doubleclick.net;img-src 'self' chat.gigaserver.cz www.facebook.com c.seznam.cz www.google.com www.google.cz www.google.sk www.google.pl www.google.at www.google.de t.paypal.com stats.g.doubleclick.net www.googletagmanager.com www.google-analytics.com googleads.g.doubleclick.net data: blob:;media-src 'self' data:;object-src 'none';script-src 'self' chat.gigaserver.cz cdnjs.cloudflare.com ajax.googleapis.com unpkg.com cdn.jsdelivr.net www.paypalobjects.com connect.facebook.net www.googletagmanager.com www.google.com www.gstatic.com www.google-analytics.com googleads.g.doubleclick.net c.seznam.cz www.paypal.com www.googleadservices.com browser.sentry-cdn.com umami.gigaserver.cz 'unsafe-inline' 'unsafe-eval';style-src 'self' chat.gigaserver.cz cdnjs.cloudflare.com ajax.googleapis.com fonts.googleapis.com 'unsafe-inline';worker-src 'self' blob:;upgrade-insecure-requests;
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
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'
- • 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