intentional EMI

No. It is not possible.

If you are worried about privacy, get rid of Windows and start running Linux or BSD. Windows is not secure.

Here is some documentation in your native language (Italian):

Perhaps your problem is an infestation of viruses (virii for Latin teachers) and spyware? I doubt it has any relation to amateur radio, as your post seemed to claim.

I suspect he's thinking of something like Tempest, where there's someone in a white van parked in front of your house picking up the signals from your CRT and reconstructing the display from them. To do this at all surely requires sensitive expensive equipment (and someone who is interested enough in what one is doing to spend the money), and I doubt you, me, or the OP are "that important."

And why not, here's Google's first link for tin-hat, er, tempest:

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I'm not sure if you'll get the joke since it's more of a US thing.

Only the black helicopters can control your PC using EMI. You need to keep a watch for them ( and wear a tinfoil hat ).

Graham