It has been three years since the last revision of the CompTIA Security+ exam. In early summer of 2014, the latest version SY0-401 was released. This revamped exam retains the same six domains as established in SY0-301, which emphasize security in three main areas: application, data, and host. New topics add attention and focus on cloud computing and mobile devices, while greater emphasis has been added to incident response and physical security. In your efforts to prepare for SY0-401, it would be a good idea to pay special attention to the new topics and issues added for this latest revision.