Application Security
for Developers

Application security training teaches developers to find and fix the vulnerability classes that attackers actually exploit, such as injection, broken access control, and cross-site scripting. It targets the people writing the code, not the general workforce.

Every exercise here puts you in a simulated workstation with a real browser and a deliberately vulnerable web app. You run the attack yourself, then apply the secure pattern that closes it.

The course spans injection (SQL and command), broken access control (horizontal and vertical privilege escalation, forced browsing), cryptographic and authentication failures (weak randomness, session fixation), and security misconfiguration (leftover debug code, vulnerable dependencies).

Cross-site scripting is covered in all three forms: stored, reflected, and DOM-based. Each exercise pairs the exploit with the remediation.

Basic familiarity with web development helps, since the fixes are shown as code changes such as swapping a concatenated query for a parameterized one.

You do not need to write code from scratch. The exercises walk you through reading the vulnerable handler, spotting the bug, and reviewing the corrected version.

PCI DSS Requirement 6.2 covers secure software development, and 12.6 covers security awareness for staff. Developers who write code touching cardholder data fall under both.

These exercises provide the hands-on secure-coding component, and completion records export to your LMS through SCORM or LTI for audit evidence.