The Safeguard browser extension taught around the question a reader actually has to answer before installing anything: what am I permitting, what does it read, what does it send, and how does it change under me. The course separates the account bound side panel from the Gold Open Source lookup extension, teaches how to read any extension's permission list rather than quoting one that will go stale, traces where an answer comes from, treats the update channel as a supply chain property of the extension itself, covers enterprise deployment by policy, and states honestly what a browser extension cannot see.
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.