A deep, code-level tour of the memory safety weaknesses that consistently rank among the most significant entries on the CWE Top 25: out-of-bounds reads and writes, the classic buffer overflow, use after free, double free, null pointer dereference, integer overflow and its chain into buffer overflow, uninitialized memory access and memory leaks. Each weakness gets an original vulnerable and fixed example, the detection methods that actually catch it, and the safer construct that removes the class, closing with a layered detection strategy and an honest look at memory-safe language migration.
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.
