Instance 1:
I got an email today that this commit was made on my behalf, however I did not write the code or commit it. Apparently it was made on June 29, but it says on my profile that the activity was on December 9.
I'm guessing that, because the usernames were matching, it thought I was that user.
Instance 2:
https://phabricator.wikimedia.org/rODCVbb2765dcfe11 for @CharlieTheCabbie