Hello,
My screen is acting in a altered/hacked way. it seems to pulsate or vibrate and there is some shadows overlaying (gohsting) on desktop screen. it looks like a terror corps invaded the screen. It first occured years ago on my older mac After opening files downloaded from a torrent site.( not realizing danger) and got on my new laptop now, not knowing it were those files on the external HD that got me in trouble the first time. The screen gohsting, overlayer and slight pulsation started immedeatly after opening the files and got me scared. Also i found 400plus photo's on my H