Impostercide prevents unauthenticated users from “signing” a comment with a registered users email address or username. There is no interface from the admin’s end, no options to select. Simply install, turn it on, and watch the spoofers get stopped.



  • Error message when you try and post as a registered user
  • One of these things is not like the other...


No special instructions.


Installation Instructions

No special instructions.

Will this work on older versions of WordPress?

This will work on WordPress from version 2.1 and up.

Will this work on MultiSite?

Again, yes. I suggest putting it in mu-plugins, but it works fine both ways.

Can this catch innocents?

Yes, but … well. The only person I’ve caught is someone who is, apparently, pathalogically incapable of remembering that he HAS an account on the site, and he needs to LOG IN with said account. He also claims to forget his password and that WordPress doesn’t email it to him, so I’m pretty much chucking his complaint as a problem with the user, and not the tool.



If you have a great amount of trolls and imposters this plugin suits perfect for your site!

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Contributors & Developers

“Impostercide” is open source software. The following people have contributed to this plugin.


Translate “Impostercide” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • March 2016 by Ipstenu
  • Fixing internationalization
  • Formatting