Sorry Baidu users, your search engine is down for the count (in parts of the world, anyway), at least for the time being. No, a late night watchman didn't trip over the power cord in a data center, and instead the outage appears to be the work of Iranian hackers.
Baidu, China's most popular search engine with a market share exceeding 77 percent, now shows a page saying "This site has been hacked by Iranian Cyber Army." These are the same dudes who also attacked and defaced Twitter just a few weeks ago using the same method: DSN cache poisoning.
Sounds toxic, but rest assured, no chemicals were used. DNS cache poisoning involves corrupting a DNS table by replacing an IP with a malicious address, which in this case is the Iranian Cyber Army page.
Why the hackers targeted Baidu is not yet known.