The average German internet user has 15 different accounts. Some of them he created because he wanted to, others he was forced to create more or less. And every single one of them is normally protected by a password. Of course, the user is lazy and therefore he is using every time the same password. At least since the major security breaches at Yahoo, LinkedIn and Tumblr you see what are the consequences. The leaked email-password combinations were used to try them at others services on a large scale and with an astonished high hit ratio accounts could be compromised. Obviously, the question is how can this be prevented best. Additionally, there are two basic conditions that do not make this easier. For one thing, more and more services insist that the password of the users has to follow specific rules (special characters, numbers, minimum length, …). […]
Too many passwords spoil the security
