Open
Cached
·
just now
89/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=shop.zettle.com
Issuer
C=US, O=Amazon, CN=Amazon RSA 2048 M01
Valid From
January 14, 2026
Valid Until
February 11, 2027
281 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
C4:73:5E:EB:8B:DD:AE:13:AC:15:1D:E2:5B:21:89:E2:A4:59:00:10:08:A7:E8:AC:8C:A9:F7:F4:C8:58:1A:20
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=63072000; includeSubDomains; preload
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Present
ch-ua-platform-version=(self "https://c.paypal.com"), ch-ua-arch=(self "https://c.paypal.com"), ch-ua-wow64=(self "https://c.paypal.com"); +4 more
Recommendations
- • Strengthen CSP by removing 'unsafe-eval'
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
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