Over the past few days government Web sites in the United States and South Korea have been under a denial-of-service attack, preventing visitors from accessing sites from the U.S. Treasury Department, Federal Trade Commission, as well as sites from several South Korean agencies including the Defense Ministry.
Some officials in South Korea have blamed North Korea, but Roger Thompson, chief research officer for Internet security firm AVG, says that it's more likely the work of run-of-the-mill hackers. In this eight-minute podcast, Thompson says he's far more worried about Chinese hackers.
Discuss: Podcast: Cyberattacks not likely from North...
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Why do so many of us still buy cars with off-road abilities?
Cities are full of cars like the Subaru XV that can drive off-road but will never see any challenging terrain. What drives us to buy cars with these abilities when we don't really need them most of the time?