The Insider Threat is current and invidious as OKTA can recently testify.
The bigger the organisation the more likely to have a disaffected employee or subcontractor driven by the persistent human frailties of Ideology, Revenge, Greed.
You need to know who is trying to access your data crown jewels., but the current methods of Multi-factor Authentication are weak and so provide convenient excuses for disaffected Insiders to deny their or their collaborators illegitimate access.
CASQUE provides a powerful deterrent against such repudiation and because it does not rely on keeping fixed secrets, there is nothing useful for a hacker to discover or for a complicit Insider to disclose.- see YouTube clip.