The year of the virus
2001 was the year of the virus, or so it seems to the vast majority of us who were unwittingly affected. During the last 12 months, worms, Trojans and viruses have got nastier, more sophisticated and ever more frequent. In 2000 one in every 700 emails contained a virus, whereas in 2001 one in every 350 carried some form of malicious attack. Unsurprisingly, the busiest months of 2001 for reported attacks were November and December.
CERT (the Computer Emergency Response Team -- a federally funded research and development centre in the US)