A developer and application security course on what HTTP security headers actually do: a server sends a header and a compliant browser then enforces the described restriction on the client side, so the protection depends entirely on the requesting browser honoring it. The course maps the header family into four groups by the specific browser behavior each changes, connection security, content interpretation, framing and embedding, and information disclosure, then works through HTTP Strict Transport Security (HSTS) and downgrade prevention, the X-Content-Type-Options header and Multipurpose Internet Mail Extensions (MIME) type sniffing, X-Frame-Options and the frame-ancestors directive as clickjacking defenses cross-referenced to csrf-and-clickjacking-defense, Content-Security-Policy treated as one member of this family rather than repeated from cross-site-scripting-fundamentals-and-defense, and the Referrer-Policy header. It builds a practical baseline set of headers, explains why testing headers in production is necessary because a staging environment does not guarantee survival through every layer of a real deployment path, surveys recurring misconfiguration patterns, works a hypothetical end to end review, and closes on the honest limit that these headers are a defense-in-depth layer dependent on browser support and correct configuration, not a substitute for fixing the underlying vulnerability a header happens to mitigate.
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.
