Url: http://www.hacking-challenges.de/

Tags: Challenges, German, Tutorials, Tools, Forum,

Hacking-Challenges is a German challenge site. In challenges from 8 categories, for example javascript, cryptography, stegano and webhacking, you can prove your skill. Moreover, Hacking-Challenges offers a huge number of decoders, tools, links and tutorials and offers the possibility to submit your own challenges.