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Documentation
Documentation is an important part of the planning and preparation phase. Sometimes, this information is not provided to you, and you must glean it yourself. In Chapter 2, Information Gathering, we will focus on getting some of this information as well, if it is not all provided.
But hopefully, you can get some information about the environment prior to jumping into the penetration test. There are different types of documentation that are great to have prior to starting a penetration test. In the next couple of sections, we will see some of the main types of documentation that we need during the preparation phase.
Documentation is great, but part of a penetration tester's job is also to verify that it's correct. We have seen way too often documentation that was outdated and/or incorrect. Use it as a guide for the test, but by no means should you use it as the single source of truth.