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Cached
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just now
89/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=hackmd.io
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M04
Valid From
January 05, 2026
Valid Until
February 02, 2027
295 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
5C:30:E1:EC:3C:74:20:ED:5E:BE:6E:7E:C8:96:7E:52:1F:1E:3D:11:10:C7:42:92:3A:EF:99:2A:79:F2:53:35
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
Present
same-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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)
Wildcard CAs
Incident Reporting
mailto:[email protected]
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement