Open
Cached
·
just now
81/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=telemetry.mozilla.org
Issuer
C=US, O=Let's Encrypt, CN=YR1
Valid From
September 22, 2026
Valid Until
December 21, 2026
70 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
62:14:15:79:06:1B:4C:1C:24:CE:60:FC:0C:09:25:6A:90:AF:80:4A:CC:61:23:C3:49:2E:A9:C1:3E:07:81:C3
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
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