If you get a screen telling you that you are under attack by many different and ferociously named trojans and viruses watch out, the screen is lying to you.

You are being panicked into buying protection that will take you further into the mire AND put your credit card/s at risk.

It pretends to be a Microsoft product and the presentation is convincing.

One basic rule to follow – if it is not your anti-virus, it is probably a virus – it will take a little shifting so ask someone who knows.