Spam User Email martin28651162 email@example.com martin322929651 firstname.lastname@example.org martin443534673 email@example.com martin640363627 firstname.lastname@example.org
Is there an easy way to remove all of these users without removing my actual “Real Users”?
Real User Email yyyy email@example.com zzzz firstname.lastname@example.org
How can I prevent these users from being created automatically?
They were probably automatically created by spam bots. You can disable user registration by going to the Settings > General page and unchecking the Anyone Can Register box. You’ll still be able to manually create users, but users won’t be able to register themselves automatically.
If you want to allow users to register, but still avoid spam bots, you can use a plugin like Pie Register to setup a CAPTCHA on the registration form.
To remove the existing spam users, you can use a plugin like User Spam Remover.
For more information and ideas, see these existing questions: