The most secured way to protect your login informations on various websites is by using different and secure passwords for different accounts. A secure password usually consists of combination of random letters, numbers, symbols, difficult to be guessed, complex, and lengthy password. So, you use a password generator to generate passwords for your logins, and your password for website-a.com is 'OtDaSOe9P2', and website-b.net is 'rRYp9UyRcxK8'. Obviously, we are not a computer to remember such passwords, unless you got an eidetic memory. If you are looking for password manager, KeePass can securely help you to store and manage your passwords.