China's most popular search engine, Baidu, has been targeted by the same hackers that took Twitter offline in December, according to reports. A group claiming to be the Iranian Cyber Army redirected Baidu users to a site displaying a political message. The site was down for at least four hours on Tuesday, Chinese media said. Last year's attack on micro-blogging service Twitter had the same hallmarks, sending users to a page with an Iranian flag and message in Farsi...