On Wednesday, Google admitted that some Gmail users — including senior U.S. government officials, military personnel, and Chinese political activists — had been the target of a hacking campaign. And they believe that the attack came from the Chinese city of Jinan. This is the second time China and Jinan have been in Google’s crossfires. Last year it traced another attack to Jinan — the site of an important military installation — and China’s actions caused Google to decide to not cooperate with China’s censorship demands. The latest hacking offense seemed to aimed at monitoring particular users’ e-mails and creating unfettered access to hacked accounts by forwarding mails.