no its not my mod... The are copying and pasting my whos online last 24 hours to theirs..
The mod is called fake community statistics.
https://vborg.vbsupport.ru/showthread.php?t=117933&
Its like if I went to your site and copied all the members showing on your 'members in the last 24 hours' and pasted it to my own site. It will show all your users usernames as my users.