A confidential advisor deals with both undesirable manners such as (sexual) harassment, aggression, bullying and discrimination, as well as integrity issues such as fraud, theft, misuse of company resources, undesirable side activities or abuse of power.
It is often difficult for smaller organizations to have their own (internal) confidential advisor. For them, then, an external confidant is a good solution. But even larger organizations often opt for an external confidential advisor, whether or not combined with an internal confidential advisor. The external confidential advisor can support your internal confidential advisor and is independent. This makes it easier for some employees to report or discuss something.