In 2009, Kasperky sales units of anti-virus, internet security and spyware products was just 1, 619, 405, trailing behind Norton branded security software with 3, 464, 544 units sold.
As the Internet spread like a virus in the 1990s, hundreds of utilities, chemical factories, wastewater plants and the like went online to enable remote monitoring and more instant communications.
When the Slammer virus shut down Internet service for several hours in Korea in January, the whole country suffered from withdrawal symptoms, says Ken Lee, chairman of Korea Telecom, the nation's biggest broadband provider.