Open
Cached
·
just now
83/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=*.feedblitz.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
April 13, 2026
Valid Until
July 12, 2026
61 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
57:4F:A1:93:F1:3C:10:23:E8:92:40:4C:52:34:84:8D:5A:D9:6B:5C:A9:49:FA:FC:1E:EA:64:47:4A:C9:3D:E8
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=31536000; includeSubDomains; preload
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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