Updated from 1:04 a.m. EST
home page was attacked by hackers, and some reports say the group responsible for the attack is the one that took down
Some Internet users reported seeing signs of an attack on the site by the "Iranian Cyber Army" when they tried to access the home page of
, China's top search engine, the
Wall Street Journal
said much isn't known about the Iranian Cyber Army, which first gained notoriety with its attack on Twitter on Dec. 18. Hacking groups continue to deface Web sites, but it is extremely rare for them to take down widely used sites like Twitter and Baidu.com.
According to security experts,
reports, Baidu's domain name records appear to have been tampered with, the same technique that was used to hijack Twitter and put it off-line for more than an hour.
"Services on Baidu's main website www.baidu.com were interrupted today due to external manipulation of its DNS (domain name server) in the U.S. Baidu has been resolving this issue and the majority of services have been restored," Baidu spokesman Victor Tseng said in a statement to the
The search engine was down for about four hours,
-- Reported by Joseph Woelfel in New York.
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