The "Darknet" is a part of the deep web as its contents are not accessible through search engines. But it is also anonymous cyber space. This anonymity is usually achieved using TOR-The Onion Router. Another darknet system (or 'Privacy network') called I2P is growing in popularity. Although many users use TOR, there appears to be a precise shift towards I2P. I2P is original short for "Invisible internet project" which offers a range of improvements such as email, file sharing & storage plug-ins and other social applications like blogging and chatting. All information is wrapped with many layers of encryption (like AES).