Open
Cached
·
just now
89/100
SECURITY SCORE
Certificate Information
Subject
CN=sandbox.game
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
October 23, 2025
Valid Until
January 21, 2026
75 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
C3:BC:B5:2A:A2:84:9F:89:19:3C:86:55:49:C4:A8:FF:F9:B4:AE:9B:70:36:6E:62:78:06:43:AC:CC:5E:B3:0F
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=2592000; includeSubDomains; preload
Content-Security-Policy
Weak
upgrade-insecure-requests
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
geolocation=(self \"https://www.sandbox.game\"), microphone=()
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