Hundreds watch, but how closely?

Plenty of stories of fairly major projects having evil commits snuck in that remain for months.

Name a few.

Only two of these were actual malicious commits. Two others were malware inserted into the repositories (if Twitter could be thought of as a meta-repo), which is bad but not on the same scale.

I wonder why nowhere talked about who Jia Tan was. In my understanding, a few people already talked to that person. Now, does Jia Tan really vanish?