Sorry, but anyone who falls for this is an idiot and deserves it. For the past 10 years, basically every legitimate company has been bombarding us all with reminders that they will never ask you for your personal or login information. It's pretty much on par with falling for a Nigerian money wiring scam.
My gfs FB account was recently hacked. She got it back but she sent out a bunch of virus filled links first. I never open emails from FB or anything looking like FB
It didn't ask for log in detail but it asked to confirm your fb acc by using your phone number(you need to do that if you don't want to enter capcha when adding friends or whatsoever) or click on a link to reconfirm. Well, after clicking it, we will be brought to the "usual" facebook log in page.. For the past 10 years..well, not all people have involved and have that kind of knowledge as you does..many newbies might fall for it. I didn't fall for it and i am not an idiot but i nearly become one lol