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Security — Module Guide
6 guided topics from the Senior Frontend Engineer Interview Preparation Sheet (v7.0). Each page follows the same guide format as the TypeScript and React modules: definitions, examples, interview callouts, and a senior summary.
| ID | Level | Topic |
|---|---|---|
| 01 | Easy | Same-Origin Policy & CORS |
| 02 | Medium | JWT storage trade-offs |
| 03 | Medium | dangerouslySetInnerHTML |
| 04 | Hard | XSS in React |
| 05 | Hard | CSRF protection |
| 06 | Hard | OAuth PKCE for SPAs |
Use the sidebar to open any topic—read the guide and solution on its own page.