> For the complete documentation index, see [llms.txt](https://blog.syselement.com/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blog.syselement.com/home/cyber-everything/web/portswigger/advanced-topics.md).

# Advanced topics

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## [Essential skills](https://portswigger.net/web-security/essential-skills)

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## [GraphQL API](https://portswigger.net/web-security/graphql)

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## [HTTP Host header attacks](https://portswigger.net/web-security/host-header)

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## [HTTP request smuggling](https://portswigger.net/web-security/request-smuggling)

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## [Insecure deserialization](https://portswigger.net/web-security/deserialization)

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## [JWT attacks](https://portswigger.net/web-security/jwt)

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## [OAuth authentication](https://portswigger.net/web-security/oauth)

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## [Prototype pollution](https://portswigger.net/web-security/prototype-pollution)

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## [Server-side template injection](https://portswigger.net/web-security/server-side-template-injection)

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## [Web cache poisoning](https://portswigger.net/web-security/web-cache-poisoning)

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## [Web LLM attacks](https://portswigger.net/web-security/llm-attacks)

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