He changed the AWS root account password; RC implies they had to go through a reset flow to recover the account. This apparently went on for more than a week. I don't know how to reconcile what Arko is claiming with what RC is claiming.
Arko believed he was in the right to do so, and while he probably should've reached out sooner to notify them of the "precaution" he was taking, the fact that they didn't notice for almost two weeks shows how unserious they are about security