Source: PCgamer It doesn't really matters or this news article is fake or not, the thing you should never do is make multiple accounts on multiple sites with the same password. In the event that this article is true, don't worry everyone with an IQ above 25.6 has not turned off Steam Guard, therefore you'll receive an E-mail in the event you log in on another computer, still it is recommended that - as soon as you're at home or have access to steam - you change your password.
Well, Steam has a system that you have to verify from your email. But yes I agree never make same password accounts.