This extension helps me very much in protecting websites for 3 months already. There is a detailed documentation in English. The support is quick and excellent too (I had 2 questions and got answers during several hours). The websites, that I support, are on different Joomla versions (1.5, 2.5). There is still a possibility to download AdminTools for Joomla 1.5 and that is very helpful. During the time of use I had more, than ten attacks at my websites and they are still OK (touch wood).