How to flag account registrations from the same ip?

[JagWaugh (Andrew Waugh)]

Is there a way to automatically flag a moderator when a user creates an account from the same ip as an existing account?

I don’t necessarily want to block the new account if the “Registration IP Address” or “Last IP Address” is a match for an existing account, but I would like a notification if that is the case.

At the moment I just look through the new accounts every week and check the ips, but that’s a bit… manual.

[zogstrip (Régis Hanol)]

Shouldn’t be too hard to do in a plugin

[lucasbasquerotto]

BTW, this plugin can help in (possibly) identifying a user with multiple accounts:

Discourse Fingerprint - Browser Fingerprinting Plugin

Discourse Fingerprint Discourse Fingerprint comes as a tool to community managers in their combat with internet trolls. It works by computing a unique identifier (a fingerprint) of each registered user, by taking into consideration over 20 browser characteristics such as user agent, screen resolution, timezone, device memory, etc. When each of these browser characteristics are considered separately, they are not enough to assess whether two users are the same. There is a re…

[DiscourseMetrics]

@JagWaugh

Is there a way to automatically flag a moderator when a user creates an account from the same ip as an existing account?

This would be very useful I keep discovering repeat trolls a bit too late.