>I think the next claim for this terrible infections capabilities will be encoding data and sending it by flashing the screen
There has been work done in that sort of area:
In a separate study conducted in the US, the LED lights that adorn most communications hardware, such as modems and routers, have also been used to snoop on electronic communications.
Joe Loughry of Lockheed Martin Space Systems and David Umphress at Auburn University, in the US, found that the technique allowed plain text to be captured from up to 30 metres away. In a real life scenario, this information might include sensitive information such as passwords.
Two more possible vectors, one CRT/LCD, one CRT only:
'Monitor's flicker reveals data on screen'
"Back in 1985, Wim Van Eck proved it was possible to tune into the radio emissions produced by electromagentic coils in a CRT display and then reconstruct the image. The practice became known as Van Eck Phreaking, and NATO spent a fortune making its systems invulnerable to it. "