A friend of mine told me about the following problem: She used to login on Facebook on a computer of her boyfriend. After they broke up she recognized that he was able to login to her account from his computer.
Of course she then changed her password, but still he is able to login via any device (smartphone, computer, etc.). She can see that in her active sessions log (though he denies that it was him). He does it as a kind of a silent observation, he wants to know where she is, who she spents time with etc.
She now is not only very angry about her "stolen privacy" but since she doesn't know what else he is capable of doing next..
So my questions basically are:
- How is it possible to get access to an account even if the password has changed?
- Is it likely that other accounts (email, skype etc.) are compromised as well (even if not used on another computer)?
- How to answer this "silent attack", i.e. regain control and completely suspend him from her account(s)? What can you do to block it?
Again, changing the password didn't help!
Any help is appreciated!
(Please correct tags, edit question etc if not clear enough)