CertaDNS

Security Analyst

You investigate domains and email. You may not own DNS.

Impersonation mechanics first, then authentication as evidence.

Sequence

  1. Step 1Domain Security Fundamentals21 lessons · about 4 hours
  2. Step 2Email Authentication Fundamentals26 lessons · about 4 hours

Covers

How lookalikes are built and detected, what CT proves, and how to read authentication results.

Does not cover

  • Takedown workflow and evidence preservation
  • Deploying the controls yourself