Open
Cached
·
just now
81/100
SECURITY SCORE
Certificate Information
Subject
C=US, ST=WA, L=Redmond, O=Microsoft Corporation, CN=*.towerborne.com
Issuer
C=US, O=Microsoft Corporation, CN=Microsoft Azure RSA TLS Issuing CA 07
Valid From
October 10, 2025
Valid Until
April 08, 2026
101 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA384-RSA
SHA-256 Fingerprint
08:1B:42:CF:34:7E:59:0D:1B:F7:24:D9:5F:82:83:EC:F8:F2:F8:CA:33:CA:D9:42:48:6C:8F:E5:11:E2:0E:67
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
Missing
Not configured
X-Frame-Options
Missing
Not configured
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 X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • 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
Configured
(Restricts certificate issuance)
Current Issuer
Not Authorized
(Potential misconfiguration)
CAA Issues
- • CRITICAL: Current certificate issuer 'C=US, O=Microsoft Corporation, CN=Microsoft Azure RSA TLS Issuing CA 07' is NOT authorized by CAA records. Authorized CAs:
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts