Why do people 'register' as administrators?

[zonkd]

Every so often, Polish email people somehow log into a 1.5 site I built some time ago, and I receive email messages like this:

A new user has registered at [domain name] . This e-mail contains their details:
Name: acdrgbddrejos
E-mail: [email protected]
Username: acdrgbddrejos

I go to the back end and delete the new name. A short time later another email arrives to say another Polish station has registered.

I wonder why they do it, and how they do it? Does it actually endanger the site?

Is the answer to upgrade the site to Joomla 3.4? I would have done so when this problem first started, only I haven't found this particular template in the latest format.

Be very grateful for advice. Cheers
paul

[mandville]

are they administrators?
you have registration enabled, enable captcha on the reg form

[zonkd]

Ah, interesting, Mandville, and thank you. I don't find captcha, but you're right about registration being enabled. Well, well, we learn all the time. Thank you!

But, Mandville, why would anyone bother to keep registering 'administrators'. I mean, what do they achieve, or hope to achieve?

[mandville]

are they registering "administrator" as a name / user name or as a user level?
if its a level then you need to check the "new user level".
if its a name then there is no issue. most spam users like that are attemtping to register to post links and stuff.
only some is to disrupt your site.

https://nakedsecurity.sophos.com/2015/0 ... t-zombies/

[zonkd]

Thanks, Mandville, all noted and appreciated. All the best paul