Open
Cached
·
just now
87/100
SECURITY SCORE
Certificate Information
Subject
C=US, ST=California, O=Apple Inc., CN=mail.icloud.com
Issuer
C=US, O=Apple Inc., CN=Apple Public Server RSA CA 1 - G1
Valid From
September 29, 2025
Valid Until
October 27, 2026
201 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F1:21:5B:8B:9C:BD:CB:26:E1:DE:C9:0C:87:3D:EA:ED:EF:F1:0D:E3:A9:9C:00:12:54:63:52:D2:1C:90:DD:73
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
Excellent
max-age=31536000; includeSubDomains; preload
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Significantly strengthen CSP directives
- • 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