Vincent Gullotto, vice president of the Anti-Virus Emergency Response Team (Avert) at security company McAfee, said recent attacks have ignored corporate networks and aimed for the home user instead.
"The [corporate] perimeter is no place for success these days [and] 80 per cent of virus submissions now come from home users," he said.
"When a home PC is bought, the software on there is usually three months old and needs updating - but many users don't realise this."
Microsoft's Windows XP Service Pack 2 (SP2) might help with this, he added, but with the slow pace of updates it could take six to nine months before it really has an effect.
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