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SECURITY SCORE
Certificate Information
Subject
CN=auth.buildwithfern.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
December 18, 2025
Valid Until
March 18, 2026
60 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
76:57:8A:CE:2B:53:81:69:F3:38:15:F6:EB:85:E0:CA:37:A0:54:61:B8:CE:77:FD:F8:B9:62:4F:B2:EF:AC:B9
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
default-src; script-src; style-src; +8 more
default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https: blob:; style-src 'self' 'unsafe-inline' https:; img-src 'self' https: data: blob:; font-src 'self' https: data:; connect-src 'self' https: wss: ws: data: blob:; media-src 'self' https: data: blob:; object-src 'self' https: data: blob:; frame-src 'self' https: data: blob:; base-uri 'self'; form-action 'self' https:
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(), geolocation=()
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • 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)
Authorized CAs
pki.goog
; cansignhttpexchanges=yes
letsencrypt.org
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