A protocol internals course for engineers who need to reason about Transport Layer Security and Internet Protocol Security precisely rather than by checkbox. You will trace the TLS handshake and record protocol message by message, learn what changed across TLS versions and how cipher suites, session resumption and forward secrecy actually work, then cover IPsec's Authentication Header and Encapsulating Security Payload, tunnel and transport mode, and Internet Key Exchange, closing with what encrypted transport actually changed for a defender watching the wire.
Nothing. Every course, exam, and certificate on the catalog is free — including retakes. All you need is a free Safeguard account.
None. The flagship course, Safeguard Certified Practitioner, is a beginner-level course — basic familiarity with how software is built helps, but every exam question is answerable from the lessons themselves.
You can retake it after a 24-hour cooldown, as many times as you need. Retakes are free, and each attempt draws a fresh random set of questions.
The Safeguard Certified Practitioner credential is valid for 24 months from issue. The expiry date is printed on the certificate and shown live on its public verification page. Renewing means passing the current exam again.
