01Which statement best captures the lesson 'Trust Boundaries and Untrusted Input'?
Beginner Foundation · F10
API and Security Primer
Learn trust boundaries, validation, identity, permission, and safe data handling before authentication phases.
10lessons
3kwords
5module checks
Lessons
013 min023 min033 min043 min053 min063 min073 min083 min093 min103 min
Trust Boundaries and Untrusted Input
Any value crossing from browser/client/external service should be considered untrusted until validated/verified.
Lab — Trust Boundaries and Untrusted Input
Hands-on transfer lab for the preceding concept.
Authentication vs Authorization
Authentication establishes identity evidence; authorization evaluates whether that identity may perform an action on a resource.
Lab — Authentication vs Authorization
Hands-on transfer lab for the preceding concept.
Secrets, Public Configuration, and Environment Boundaries
A secret is valuable because unauthorized possession grants capability; treat keys/passwords/tokens accordingly.
Lab — Secrets, Public Configuration, and Environment Boundaries
Hands-on transfer lab for the preceding concept.
Common Web Risks in Plain Language
XSS executes attacker-controlled script in another user's browser context.
Lab — Common Web Risks in Plain Language
Hands-on transfer lab for the preceding concept.
Security Testing Mindset
Test what an attacker would change: IDs, roles, methods, fields, file names, content types, request rate, expired tokens.
Lab — Security Testing Mindset
Hands-on transfer lab for the preceding concept.
Module check
Can you recognize the correct mental model?
02Which statement best captures the lesson 'Authentication vs Authorization'?
03Which statement best captures the lesson 'Secrets, Public Configuration, and Environment Boundaries'?
04Which statement best captures the lesson 'Common Web Risks in Plain Language'?
05Which statement best captures the lesson 'Security Testing Mindset'?