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SECURITY SCORE
Certificate Information
Subject
CN=ufam.edu.br
Issuer
C=AT, O=ZeroSSL, CN=ZeroSSL RSA Domain Secure Site CA
Valid From
November 03, 2025
Valid Until
February 01, 2026
69 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA384-RSA
SHA-256 Fingerprint
E6:FE:D4:FF:9C:68:2A:EF:97:2D:29:61:62:74:19:29:39:84:96:74:32:FF:48:2F:51:76:91:5F:58:62:64:09
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=63072000; includeSubDomains
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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