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SECURITY SCORE
Certificate Information
Subject
CN=walls.io
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 02, 2025
Valid Until
March 02, 2026
43 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3B:F5:A2:E4:73:15:D7:24:E9:A6:C5:0A:25:17:B8:BC:16:2B:26:6C:F2:E7:11:23:2C:95:FA:B2:D7:7A:F4:2E
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
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
sectigo.com
amazon.com
amazonaws.com
amazontrust.com
awstrust.com
digicert.com
letsencrypt.org
pki.goog
; cansignhttpexchanges=yes
Incident Reporting
mailto:[email protected]
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • You have authorized 8 CAs - consider limiting to only the CAs you actively use
- • Consider adding 'issuewild' records to control wildcard certificate issuance