Open
Cached
·
just now
92/100
SECURITY SCORE
Certificate Information
Subject
CN=knak.io
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 06, 2025
Valid Until
March 06, 2026
46 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
1B:C2:ED:B6:3E:E0:AD:BA:E2:AC:EC:62:2E:E6:6E:F7:6E:C9:9F:DD:F0:B3:DA:89:9A:66:7B:BA:B6:E1:5B:9C
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
Excellent
max-age=31536000; includeSubDomains; preload;
Content-Security-Policy
Weak
base-uri; font-src; form-action; +6 more
base-uri *; font-src * data:; form-action *; frame-ancestors *; img-src * data: blob:; object-src *; script-src-attr 'none'; style-src * https: 'unsafe-inline'; upgrade-insecure-requests;
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(), display-capture=(), fullscreen=(*), geolocation=(), microphone=()
Recommendations
- • Significantly strengthen CSP directives
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • You have authorized 7 CAs - consider limiting to only the CAs you actively use
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
- • Consider adding 'issuewild' records to control wildcard certificate issuance