which released a survey Monday ranking the world's most dangerous Web addresses. McAfee says more than 10% of all Web sites registered out of Tokelau, identifiable by the ".tk" at the end of their Web address, will expose users to spam, viruses and spyware.
McAfee's survey was based on data from SiteAdvisor, a Boston-based company that the security company bought last April. SiteAdvisor's free online tool assigns Web sites a safety score based on whether they send spam, infect surfers with malicious programs or deliver excessive pop-up ads.
The new survey distinguishes sites based on their domain registration, which shows up as the last two or three letters in a Web address: Brazilian sites, for instances, end in ".br", while sites registered by academic groups tend to end in ".edu". McAfee says it looked at 8.1 million heavily trafficked Web sites registered at 265 different domains.