Open
Cached
·
just now
90/100
SECURITY SCORE
Certificate Information
Subject
CN=claude.ai
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
September 21, 2025
Valid Until
December 20, 2025
47 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
92:28:7C:AB:FA:EF:6C:5A:74:5C:7A:A5:5C:E0:98:71:A7:A6:38:CD:72:19:87:51:D1:C5:EE:94:EA:1C:CD:69
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
Content-Security-Policy
Basic
script-src; object-src; base-uri; +8 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Present
accelerometer=self, attribution-reporting=*, autoplay=self, bluetooth=self, browsing-topics=*, camera=self, compute-pressure=self, display-capture=self, encrypted-media=self, fullscreen=self, gamepad=self, geolocation=self, gyroscope=self, hid=self, identity-credentials-get=self, idle-detection=self, local-fonts=self, magnetometer=self, microphone=self, midi=self, otp-credentials=self, picture-in-picture=*, publickey-credentials-create=self, publickey-credentials-get=self, screen-wake-lock=self, serial=self, storage-access=*, usb=self, web-share=self, window-management=self, xr-spatial-tracking=self
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
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