Open
Cached
·
just now
80/100
SECURITY SCORE
Certificate Information
Subject
CN=gds.se
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 31, 2025
Valid Until
March 31, 2026
75 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
83:60:5E:42:C0:AE:DA:8F:B7:34:BE:22:28:21:99:0D:60:47:CB:69:D6:0F:89:BF:08:C8:BA:BA:1C:48:7C:E7
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=15724800; includeSubDomains
Content-Security-Policy
Basic
default-src; script-src; script-src-elem; +7 more
default-src * data: mediastream: blob: filesystem: about: ws: wss: 'unsafe-eval' 'wasm-unsafe-eval' 'unsafe-inline' unsafe-inline; script-src 'self' * data: blob: unsafe-inline 'unsafe-inline' 'unsafe-eval'; script-src-elem * data: blob: unsafe-inline 'unsafe-inline' 'unsafe-eval'; connect-src * data: blob: unsafe-inline 'unsafe-inline'; img-src * data: blob: unsafe-inline 'unsafe-inline'; media-src * data: blob: unsafe-inline 'unsafe-inline'; frame-src * data: blob:; style-src * data: blob: unsafe-inline 'unsafe-inline'; font-src * data: blob: unsafe-inline 'unsafe-inline'; frame-ancestors 'none'
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Missing
Not configured
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 X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Add X-Content-Type-Options: nosniff
- • 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