Stop person from creating multiple fake accounts

[William Davis]

This has been brought up before (post "Someone is creating new fake customers accounts"). I've had the same problem before but with affiliate accounts (post "Someone is creating new fake affiliate accounts 1700+"). The problem has now resurfaced.

[TheTeaTable]

Is there an option for a two step authentication for new accounts in Miva 9? It seems like there should be, but I don't see it.

[TheTeaTable]

Someone is creating a bunch of fake accounts on our site. Can I stop this, or do I just have to keep deleting them? I don't know what the purpose is. It's not carding since there aren't failed transactions. No orders, just a bunch of fake accounts with different email addresses. Could it be to test for valid email addresses? Most seem to be business addresses.

EDIT: to clarify, this is dozens of accounts over the last day or so. Not thousands, and they're spread out over time, so I doubt it's a bot.