Q: My Macbook Pro has been hacked by trolls - how do I secure my computer? How do I get rid of the trolls?

It's a long and very personal story. Suffice to say, there are two men intimately known to a former female work associate of mine. One is her boyfriend - possibly ex-boyfriend by now, I don't know - and the other is her brother. I know them both by name - but I don't 'know' either of them and they don't know me. They both infiltrated my Facebook account using fake avatars - it seems to be a familiar trope on both Facebook and the Internet at large - when my professional and personal relationship with this woman went pear-shaped. That in itself is another long and confusing story which I don't want to go into here. Anyway, I 'outed' both these 'boys' on Facebook, and now I think there's a revenge trope happening. I think these 2 have guessed my easy to guess password to my Apple Mac to gain absolute access to my computer: that's my big concern. How do I know? There's a 'numeral' system they use as part of the psychological abuse going on here: 1 is the woman; 5 is the boyfriend; 8 is the brother; 6 is me and 0 is nought. So for example, in the Applications icon on my Mac dock, a numeral 1 appears - is there for a while - and then disappears again by magic and then reappears again. When I go in to the icon, there's an 'update' to Garageband 6.0.5 - which I click on update I get an error 100 message and then the message comes up that it's out of date or another user has purchased it.

So - what can I do here and how are they doing it? I am very tempted to go to the police... but that still won't resolve the current problem of the abuse and that they have control of my computer.

I should add that I am not particularly computer literate or interested in technology beyond that it works for me and enables me to communicate and do my work.

Thank you. That's a really good suggestion. I will do that and hopefully that will fix my problem with these abusers.