My computer was completely blocked a few days ago.
Had message to say my computer had been hacked, passwords, bank info etc in danger and that I should contact "MS" asap (telephone number given). Message kept repeating ad nauseam!.
I turned off computer using power button and did not use computer for a couple of days.
On restarting the computer was unblocked and oK to use.
I have done Malawarebytes scan and full MS Security Essentials and everything seems ok.
I am concerned that the hackers may somehow have gained access to my computer and are capable of hacking into passwords, bank info despite these scans being ok.
Am I right to still be concerned? If there is still a possibility of hidden problems is there anything else I can do?
Lastly, MWB and Security Essentials don't seem to have prevented this hacking - probably for ransomware. Is there anything I can download to prevent this happening again?