Cached · just now
92/100 SECURITY SCORE

Certificate Information

Subject
CN=gordonchen.dev
Issuer
C=US, O=Google Trust Services, CN=WR3
Valid From
February 05, 2026
Valid Until
May 06, 2026 81 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
BF:FC:90:48:D4:BF:9C:F8:15:27:97:C6:61:20:40:00:62:99:58:38:DA:F1:1B:00:8D:DD:73:BC:82:36:BF:97
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
Good
max-age=31536000; includeSubDomains
Content-Security-Policy
Good
upgrade-insecure-requests; default-src; base-uri; +8 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
no-referrer, strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
  • Consider adding 'preload' to HSTS for maximum security
  • Strengthen CSP by removing 'unsafe-eval'
  • 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

Subject Alternative Names

100 domains
info.fortum.com

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equinoxsolutionsmy.com
www.gcnym.com
www.glowfishproductstudio.com
gordonchen.dev
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halifaxweb.dev
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