Apart from creating your profile, you also have to provide phone numbers where you can be reached. Why, you'll ask. The easiest answer seems to be in providing seemingly unbreakable passwords. Passwords cost nothing in terms of hardware and can easily be implemented. But they are also the least secure way to protect anything.
Human beings are remarkably predictable when it comes to passwords.
By some estimates, as many as 50 per cent of all passwords can easily be cracked by using lists of commonly chosen words, a piece of cake for any self-respecting hacker. And once he gets in, just think of the damage he can do. More importantly, most companies have to prevent cracking, as opposed to hacking. When an insider breaks into a system, it's called cracking, which happens in 90 per cent of system break-in cases. But companies maintain a stony silence for obvious reasons.