It was almost constantly a reminder that if using a laptop or home computer ,then pleased be advised to take caution for security reasons ,log out each time after a session in Yahoo or g-mail or any other mail account. But not come across a smartphone yet that enable's you to do so. Not unless you close down or delete your mail account on every occasion like i see on here described . So presumably then, you would assume a phone's likelihood of being hacked into on this media is less so than in the former described. Why then the need for mobile security?. I'm just a novice, but so far i know, a mobile is like any other device .. Tablet ..PC .. .all open to who-ever so ,or has the knowledge to work their way in ,and take/steal whatever info - private details belonging to you if so the wish takes them. If you can sign out of your email account when YOU have finished ,then you feel safer.