It seems they reacted before the team even sent over a report in one case:
> Before we could even finish sending our report or see if other endpoints were accessible (e.g. adding points to a customer rewards account), the points.com team had detected our testing and had completely shut down United's production points.com website. Bummer!
> Before we could even finish sending our report or see if other endpoints were accessible (e.g. adding points to a customer rewards account), the points.com team had detected our testing and had completely shut down United's production points.com website. Bummer!