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Topic · 15 lessons

Application Security

Explore vulnerable designs and the controls that change the outcome.

Application security / Framework collection

OWASP Top 10 2025

Understand the ten risk categories, one at a time. Start with the overview or go directly to the category you need.

Explore the Top 10

Vulnerability deep dives

SQL InjectionSee what happens when data changes query structure, then separate the statement from its parameters.6 minLessonCross-Site ScriptingFollow untrusted text into a browser and compare interpreting markup with rendering plain text.6 minLessonServer-Side Request ForgerySee how a user-controlled destination can make a server cross a network trust boundary.6 minLesson

Secure engineering

Keep Service Secrets Out of CodeFollow an application credential from issuance to use, rotation and revocation.5 minLessonWhat Are We Protecting, and How?Connect confidentiality, integrity, availability and layered controls to everyday examples.7 minLesson

Paths through this topic

Cybersecurity fundamentals

Connect technology with threats, controls and evidence.

Your first cybersecurity projects

Explore roles and build small, safe pieces of work you can explain.

Web and application security

Understand identity and requests before exploring security failures.