Open
Cached
·
just now
91/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=linkgraph.com
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
April 27, 2026
Valid Until
July 26, 2026
76 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
24:43:7A:6F:BA:B3:4F:6F:99:52:E1:A2:E0:01:24:DD:48:84:B7:85:2B:14:44:FD:18:7E:AB:D2:E8:4B:D5:8C
Alternative Names
Security Configuration
TLS Protocols
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=15552000; preload
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
geolocation=(self "https://www.linkgraph.com"), microphone=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
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