Open
Cached
·
just now
88/100
SECURITY SCORE
Certificate Information
Subject
CN=convertkit.com
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M02
Valid From
September 01, 2025
Valid Until
September 30, 2026
294 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3B:B5:9B:E1:E3:B8:FD:38:04:45:59:6B:1E:A8:BC:3F:C8:D7:D1:F2:2D:97:BD:48:B2:AE:04:24:41:67:70:C9
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
HTTP Security Headers
Status
Strict-Transport-Security
Excellent
max-age=63072000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Present
geolocation=*
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
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