Similarly Kaspersky Labs' anti-virus software lets one copy update itself via the net and then copies on other PC can download updates from that machine via the home network.

BBC: NEWS | Technology | Home PC face security onslaught

More people are walking into Best Buy and buying Kaspersky Lab than Norton Anti-Virus and McAfee products, according to various trade journals.

FORBES: Russia's Bear in the Woods Has Arrived

Russian IT security company Kaspersky Labs told users to disable its anti-virus software or roll back the update.

BBC: Kaspersky anti-virus cuts web access of thousands of PCs