SSL Certificate Analysis for au.pets.yahoo.com - Security Grade & TLS Configuration

Open Cached · just now

85/100 SECURITY SCORE

Certificate Information

Subject

C=US, ST=New York, L=New York, O=Yahoo Holdings Inc., CN=src4.yahoo.com

Issuer

C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1

Valid From

October 27, 2025

Valid Until

April 22, 2026 154 days

Public Key

ECDSA 256 bit (P-256) Adequate

Signature Algorithm

SHA256-RSA

SHA-256 Fingerprint

32:35:E9:F4:A5:27:EA:3B:81:A1:37:A6:34:B3:24:11:D9:9A:F6:2B:51:07:2A:76:07:68:BF:08:40:6D:88:0D

Alternative Names

88 domains

Security Configuration

TLS Protocols

TLS 1.2 TLS 1.3

Forward Secrecy

Supported (Modern clients use PFS)

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

Content-Security-Policy

Weak

frame-ancestors; sandbox; report-uri

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

no-referrer-when-downgrade

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Significantly strengthen CSP directives
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• 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