This duck, it has grown a lot for its artificial intelligence on the web, and security. he deserves more, than stars here staff. very safe in the way of browsing, I am very impressed, as his algorithm, it works in a way, that eliminates all that, excess "# $ " of, advertisements, and in a very, specific way. you can specify well, your searches. and several points he, it turned out, better than Google Search. I found, very friendly your environment, I hope, come translated every aspect of it, to PT_BR. in short, I recommend it, for those who do research, technological or even students. who want to deepen their knowledge about security in various aspects...