Url: http://0x80int.blogspot.fr/

Tags: Mathematics, French, Tutorials, Linux,

Shirobi labs is a blog that explains various challenges (without giving away the answers). An explanation of the vulnerability is given and then it's left up to you to exploit the challenge on the challenge site.

There are also many diverse articles in topics such as mathematics, linux, and more. The blog also explains some of the many different tools available in Backtrack.