Open
Cached
·
just now
86/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=xiyu.com
Issuer
C=US, O=Let's Encrypt, CN=YE1
Valid From
June 19, 2026
Valid Until
September 17, 2026
58 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
1D:8C:D4:11:D8:E2:F1:11:35:2E:DE:8B:BD:B8:4C:98:27:E8:32:1D:06:E7:AE:4A:8F:1D:78:53:2A:01:E6:64
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=63072000; includeSubDomains; preload
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Content-Type-Options: nosniff
- • 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
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
- • Consider adding 'issuewild' records to control wildcard certificate issuance