From time to time, change your passwords from the mailbox, the pages of the social network, game accounts, etc. D. Attackers, hacking your secret code, can use the moment and make some dirty trick. Never put a password related to the phone number, date of birth or name. As well as combinations like «123456», «QWERTY», «ZXCVBNM». They are very popular and not so difficult to guess. Also, the password should not contain only one numbers! Use the numbers mixed with letters. For example «5GR635RBD93C». The password should be as long as possible, preferably from 15 signs and more.