DNS Gurus
Cached · just now
87/100 SECURITY SCORE

Detected Technologies

See all in URL Inspect 29
Adobe Target logo Adobe Target Microsoft Entra ID logo Microsoft Entra ID YouTube logo YouTube Adobe Audience Manager logo Adobe Audience Manager AppNexus (Xandr) logo AppNexus (Xandr) Microsoft Advertising Citrix logo Citrix DigiCert logo DigiCert Flourish GitHub logo GitHub Google AdSense logo Google AdSense Google Conversion Tracking logo Google Conversion Tracking Google DoubleClick logo Google DoubleClick Google reCAPTCHA logo Google reCAPTCHA Google Search logo Google Search Google Static File Front End logo Google Static File Front End Google Sign-In logo Google Sign-In Google Tag Manager logo Google Tag Manager LinkedIn logo LinkedIn Megaphone Microsoft Clarity Omny Studio Microsoft Power BI SlideShare logo SlideShare Tealium logo Tealium Vidyard logo Vidyard Vimeo logo Vimeo Google Cloud logo Google Cloud Microsoft Azure logo Microsoft Azure

Certificate Information

Subject
C=US, ST=California, L=Sunnyvale, O=LinkedIn Corporation, CN=lynda.com
Issuer
C=US, O=DigiCert Inc, CN=DigiCert SHA2 Secure Server CA
Valid From
January 22, 2026
Valid Until
July 22, 2026 150 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A1:26:0B:A3:33:30:DB:05:85:7A:ED:7B:22:63:86:9B:E5:54:CD:E9:3D:E9:7F:89:48:73:DE:9A:61:BB:64:F6
Alternative Names
21 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
YouTube logo
Good
default-src; connect-src; script-src; +9 more Analyze
Content-Security-Policy-Report-Only
Missing
Not configured Analyze
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Strengthen CSP by removing 'unsafe-eval'
  • • 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=DigiCert Inc, CN=DigiCert SHA2 Secure Server CA' 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