VulnHub
Provide materials that allows anyone to gain practical 'hands-on' experience in security.
We all learn in different ways: in a group, by yourself, reading books, watching/listening to other people, making notes or things out for yourself.
Learning the basics & understanding them is essential; this knowledge can be enforced by then putting it into practice.
Over the years people have been creating these resources and a lot of time has been put into them, creating ''hidden gems' of training material. However, unless you know of them, its hard to discover them.
So VulnHub was born to cover as many as possible, creating a catalogue of 'stuff' that is (legally) 'breakable, hackable & exploitable' - allowing you to learn in a safe environment and practise 'stuff' out.