Letter: Satan on the Internet

Sir: Andrew Brown in "Californian biker lets Satan ride out on the Internet" (5 April) states that the perceived danger from Satan is limited by the fact that Satan only runs under the Unix operating system, which "is seldom found outside universities and large companies".

I would like to point out that many people run Linux (which is a version of Unix available on the Internet at no charge) at home, so the danger may be greater than you fear.

Regards,

MARTIN TOMES

Durrington, West Sussex