# Black Box, White Box, Grey Box Penetration Testing Black Box Testing - the tester is not given any information about how the application or service works. White Box Testing - low-level process usually done by a software developer who knows application logic and programming. the tester will have full knowledge and ensures that the entire attack surface can be validated. Grey Box Testing - the tester has partial knowledge of the internal componenets of the application or software, and will still be interacting with the application as if it was a black-box. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://kaelenvs-cybersecurity-notes.gitbook.io/kaelens-tryhackme-experience/modules/introduction-to-penetration-testing/pentesting-fundamentals/penetration-testing-methodologies/black-box-white-box-grey-box-penetration-testing.md?ask= ``` 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. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.