One of my clients, an authorized user in her sub-site, contacted me the this morning that she just noticed that a bunch of pages are showing as the author "mikez"-- who she didn't recognize. She wondered if her site had been hacked.
I checked, and about half of the pages in her 25-page site have this user showing as the author, although I KNOW that this person did not create those pages (they were all created by ME).
When I click on the author name, the dashboard just refreshes the All Pages page. The user does not show in the users for this subsite.
As a stab in the dark, I searched the username in the Network Admin dash, and found that the user account is one for a relatively new sub-site.
I did a quick sample of the 50+ other sites in the network, but no others are showing this (or any other unexpected) username.
I've never seen this before, and I can't find anything through a google-search. Anyone have any idea what is going on? And just as important: how to fix it?