Viruses have been known to cause system changes that affect external hardware and accessories. Computer operating by itself Computers should not be executing demands without authorisation.

Microsoft yesterday confirmed some of its MSN Hotmail servers were infected with a "Code Red" virus, the computer virus that exploits a vulnerability in Microsoft's server systems.

The "Code Red" computer virus reached Switzerland early this morning infecting numerous well-known companies, a Swiss government spokesman said. Meantime the FBI said early this morning that over ...