Recently I’ve been interested in several different areas of computer science, one of which is web/system security. I am not trying to join Anonymous or something ;), but You can never have enough knowledge. Due to that fact I’ve stumbled upon a nice page, with some kind of CTF-like games or tasks, which can greatly increase Your knowledge about linux, web and security. I have not ended all tasks but it can be really fun. Here is the page – http://overthewire.org/.