Q: *YOUR APPLE COMPUTER HAS BEEN BLOCKED* what does this mean?

Did you allow them access to your computer?

Did you divulge any personal or financial information?

It sounds like someone has managed to install some malware on your system. You should go to an Apple Store, or some other professional, and have them take a look.

Faseleh wrote:

 

Could you please tell me what should i do?

Your Mac has been compromised, erase it and restore data only from a backup that is earlier than when you gave the criminals access to your Mac. You should also change all passwords/logins for all credit cards, online accounts and government info (social security number etc)

You should do this now.

You should uninstall all Malware Application from from your Mac Like Zip Cloud, Mackeper, Trovi through the adware medic application and try to openthe Mac in safe mode to uninstall the Application and troubleshoot the problems,

Thanks and Regards,

Nandan Upadhyay