Open
Cached
·
just now
89/100
SECURITY SCORE
Certificate Information
Subject
CN=www.sillysketch.com
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
January 06, 2026
Valid Until
April 06, 2026
75 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
3F:BC:E4:E8:F5:A6:F8:98:D3:4D:EC:0E:FA:04:7D:83:9C:28:50:47:1E:36:4C:34:0C:23:39:3B:9D:3C:15:00
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=31536000; includeSubdomains
Content-Security-Policy
Basic
default-src
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer-when-downgrade
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Consider adding Permissions-Policy to control browser features
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
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Other domains in certificate