About 58% of the sites using Vietnam's .vn domain harboured malware found the McAfee report.
Those on vacation the dangerous sites danger having sensitive information stolen or their P.C. being hijacked.
In all, it found, 6.2% of the 27 million live sites it marks were found to be dangerous to visit. A figure up from 5.9% in 2009.
"The web is getting trickier to navigate safely," mentioned the inform that attempted to put together a universal image of the crook wake up perpetrated around the net.
Sites dangerous to revisit could horde supposed drive-by downloads that take advantage of bugs to setup assault ethics on a PC. Others may be counterfeit pharmacy sites or horde virus-ridden files.
Vietnam had usually turn a prime with hi-tech criminals in 2010, mentioned the report, as in 2009 the country's domain came 39th in the universal danger ranking. By comparison, the UK is ranked as the 49th riskiest domain.
Explaining the overload in rouge activity, Paula Greve, executive of web safety investigate for McAfee Labs, said: "Cybercriminals aim regions where induction sites is inexpensive and available and stance the smallest danger of being caught."
"A domain that's protected a year may be dangerous the next," she said.
About 15,000 of the 24,000 websites sitting on the .vn domain were home to crook activity, mentioned the report. Many .vn domains are used as re-direct points for other rouge sites or to manage networks of hijacked computers or botnets.
Among broad domains, the .info appendix moreover valid renouned in 2010 as the number of rouge sites on the domain grew by 94.5%. Spam gangs were using the pragmatic authority of the .info name to lend credit to sites peddling counterfeit pills or fraudulent safety software, it found.
Malicious sites hosted beneath the .com domain roughly strike a million in 2010 with many being enrolled in long-running malware attacks.
For instance, mentioned McAfee, many .com domains were entangled in the Koobface pathogen flare-up that targeted Windows users who were complicated users of amicable networking sites such as Facebook, MySpace and Twitter.
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