Baidu, China's largest Internet search engine, was the target of a four-hour cyber attack yesterday, the most severe since it was established in 1999.

中国最大的搜索引擎百度昨日遭遇自1999年成立以来最严重的攻击，4小时后才恢复正常。

youdao

Relying on oil and gas wealth, the country has yielded only a handful of entrepreneurial successes: search engine Yandex, e-mail service Mail.ru, cyber security giant Kaspersky Labs, and cloud computing company Parallels.

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