vb.org Archive - Fake Members Mod?

I have been following this forum for years off and on and see all these fake members registered.

Which fake members mod is this I cant figure it out.

At all times over 3000 people are on this forum but in reality when checking there are maybe 20-30. There are 50k registered members of which 10k are actual members.

Where did they get the ability to automatically add 10's of thousands of fake members with different user names?

which Vbulletin modification/plugin is this because I cant find anything like it.

professionalmuscle.com

X vBulletin 3.8.12 by vBS Debug Information
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Queries Executed 10 (?)

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X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01363 seconds Memory Usage 1,700KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (1)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
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