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Well, this sounds like a good reason to not use rest mode unless I really, really need it, and in fear of power outages, preferably not even then. I think I might disable rest mode completely (I only used it to charge my controllers anyway).

CWegzz said:

Also, what is 2-factor authentication?

When you log in, you have to enter a one-time authentication code as well. In most cases, you get the code via SMS (and this is the case with PS4 as well). This way knowing your password is not enough to gain access to your account. Instead, access to your phone is needed too. Why is it a good thing? If you're reusing the same password for several services, you should either change them to use different passwords or use two-factor authentication. That way when your password leaks during a hack to some of those services, the hackers can't simply try your password on other services (well they can but it won't be enough). What value might your PSN account have, you might wonder. Well, if you have games on it, it could be sold for some money.