There are mature and well known techniques for mitigating insider threats. Key rotation capability is table stakes. Keys that are too expensive to rotate need t

There are mature and well known techniques for mitigating insider threats. Key rotation capability is table stakes. Keys that are too expensive to rotate need to be in HSMs, and probably protected by operator quorum. There may be some short-lived, limited purpose keys that are more vulnerable, but the whole company’s master keys to everything should absolutely not be held by any one person.