SSL Certificate Analysis for m.tw.search.buy.yahoo.com - Security Grade & TLS Configuration

Detected Technologies

See all in URL Inspect 1

DigiCert Active incidents

Certificate Information

Subject

C=US, ST=New York, L=New York, O=Yahoo Holdings Inc., CN=src7.yahoo.com

Issuer

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

Valid From

September 24, 2026

Valid Until

December 23, 2026 80 days

Public Key

ECDSA 256 bit (P-256) Adequate

Signature Algorithm

SHA256-RSA

SHA-256 Fingerprint

01:A7:BF:51:0A:42:DA:CF:68:71:B1:5C:4C:CB:FA:93:E0:50:FB:44:8F:89:EA:76:7C:1E:C4:3A:02:46:D3:12

Alternative Names

91 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

Good

sandbox; default-src; img-src; +3 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Excellent

DENY

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
• Strengthen CSP by removing 'unsafe-eval'
• 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