The cause of an Internet outage in China that rerouted millions of users to a U.S. website of a company which helps people get around Beijing's censorship remained a mystery on Wednesday, but experts weighed the possibility of a cyberattack.
Users were redirected to a site run by a company tied to the Falun Gong, a spiritual group banned in China which has been blamed for past hacking attacks.
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An official Xinhua news service report quoted Chinese security experts saying the outage could have been exploited by hackers, or could have been the result of a hacking attack.
The state-run China Internet Network Information Center (CNNIC) said in a microblog post that the outage, which lasted for several hours, was due to a malfunction in China's top-level domain name root servers on Tuesday afternoon.