Open
Cached
·
just now
89/100
SECURITY SCORE
Certificate Information
Subject
CN=www.cdla.dev
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
September 22, 2025
Valid Until
December 21, 2025
40 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
37:7F:3F:B0:60:6D:B6:EA:42:76:AD:80:ED:02:06:AC:59:47:23:D7:5D:32:98:E7:5E:25:F6:8D:1D:36:12:60
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
Present
max-age=31622400
Content-Security-Policy
Weak
connect-src
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Present
geolocation=(self "https://example.com") microphone=() camera=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Significantly strengthen CSP directives
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