The Web can be a precarious place. There are millions of sites, some benign, some compromised and some downright malicious. It is into this sea of murky waters that we dive every time we surf the Web. For the fourth year in a row, researchers at McAfee have tried to shed some light on the situation in their "Mapping the Mal Web" report, which ranks the riskiness of the worlds TLDs (top-level domains). The rankings were determined by the ratio of a TLDs risky sites to its total sites, as well as the ratio of a TLDs risky sites to all risky sites on the Web. The rankings were not weighted by TLD traffic or the level of risk of the analyzed sites (such as sites with drive-by downloads as opposed to a site sign-up that results in spam). The names at the top of the list have changed little during the past 12 months, but unfortunately the percentage of risky sites has, jumping from 5.8 percent in 2009 to 6.2 percent in 2010. Attackers are hard at work and abuse the trust and overconfidence of users to launch everything from drive-by downloads to phishing attacks. The ease of registration, lack of regulation and low price are all factors of how attackers pick TLDs, McAfee found. Add up all these things and understanding the riskiness of different domains can make a difference in protecting your computer network. Without further ado, here is McAfees list of most dangerous domains, and a little bit about which ones are less likely to dirty up your machine. – …