Orca detected that the root account was used to describe EC2 instances. This action may indicate of a presence of an unauthorized actor in the cloud environment, since listing EC2 instances usually are not made from the root account profile. Furthermore, listing EC2 instances is a common enumeration action attackers conduct in the reconnaissance phase. The root account should not be used in day to day administrative tasks because it can't be deleted and its permissions can't be revoked. If its credentials will be stolen the entire account is at risk.