It also happened in the UK, reported here some time back.
Well, yes and no. That was a commercial sales platform which literally anyone could sign up to. Users might own firearms, have sold their firearms, or airguns, or never have owned firearms in the first place. It was bad, but by no means a complete list of firearm owners/users - compared with leaking a list of current permit holders.
This is more comparable to a Police force leaking the National Firearms Licensing Management Database.
Biting the hand that feeds IT
