Zat's data and conclusions may be correct. The problem is he is such a condescending prick and delights in pointing out how smart he thinks he is compared to everyone else. Maybe if he dropped the douche bag attitude people would be more inclined to listen to him.

I frequent the site where these claims of "hacking" first appeared.

It wasn't so much hacking as looking things up on Wikipedia the person who did it explained. Yahoo mail asks you questions in order to retrieve a lost password, and the answers to the questions asked were easily found out via Wikipedia and other sites.

These people are not hackers in any sense of the word, they are just teenagers to twenty-somethings who enjoy messing with people for the fun of it.