# Page Not Found

The URL `files/xfDDeQeQhyWCSbnoZfgI` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [От same-site до главного site](https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-4-mezhsaitovye-ataki/ot-same-site-do-glavnogo-site.md)
- [Template Injection in Frontend - CSTI](https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-3-ataki-bez-javascript/template-injection-in-frontend-csti.md)
- [Проблемы Cross-Origin безопасности](https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-4-mezhsaitovye-ataki/problemy-cross-origin-bezopasnosti.md)
- [Введение в Cross-Origin Resource Sharing (CORS)](https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-4-mezhsaitovye-ataki/vvedenie-v-cross-origin-resource-sharing-cors.md)
- [Первая линия обороны от XSS - Sanitization](https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-2-zashita-i-obkhod-dlya-xss/pervaya-liniya-oborony-ot-xss-sanitization.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://wr3dmast3r.gitbook.io/client-side-fundamental/glava-4-mezhsaitovye-ataki/ot-same-site-do-glavnogo-site.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://wr3dmast3r.gitbook.io/client-side-fundamental/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://wr3dmast3r.gitbook.io/client-side-fundamental/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/client-side-fundamental/glava-4-mezhsaitovye-ataki/ot-same-site-do-glavnogo-site.md`).

You may also use `Accept: text/markdown` header for content negotiation.