The first warning sign would be where they discuss your AUP and exceptions / corner cases to it

--srs

From: NANOG <nanog-bounces@nanog.org> on behalf of Ross Tajvar <ross@tajvar.io>
Sent: Thursday, April 16, 2020 9:03:58 AM
To: Rich Kulawiec <rsk@gsp.org>
Cc: North American Network Operators' Group <nanog@nanog.org>
Subject: Re: Constant Abuse Reports / Borderline Spamming from RiskIQ

On Wed, Apr 15, 2020 at 8:52 AM Rich Kulawiec <rsk@gsp.org> wrote:

there are
all kinds of things that can be done to detect problematic customers
before you sign them up and once they're in place.

Hey Rich,

Can you give some examples of the things you mention above? I'm not doing much in terms of customer filtering and would be interested to hear what others consider best practice.

-Ross