Google hacked again by the Chinese?

Just how extensively has Google been hacked by the Chinese?  At least 3 of my friends are reporting that their friends are receiving spam from their Gmail accounts.  One of my friends found this spam in his Sent Items folder and found that his account had been accessed by someone else.  Yet, he is confident that his password would not have easily been guessed.

A few months ago, I turned on comment moderation on my Blog because I got tired of the spammers posting links in the comments.  Now, the only comments I moderate are the legitimate ones.  But, the ones in Chinese continue to appear.