These are all examples of behaviors that indicate a weak anti-fraud corporate culture. In companies and other organizations where this is the case, danger lurks. On fraud, on damage and negative impact on employees and other stakeholders. This can and must be prevented by building and continuously strengthening the (anti-fraud) corporate culture.
For example, by making fraud negotiable internally and clearly indicating what is considered desirable (positive approach) and undesirable (negative approach) within the company. By making employees aware and alert, for example by providing fraud training or discussing dilemmas. By promoting an open corporate culture so that employees dare to stand up (aka: "speak up") who observe undesirable behavior - including that of managers. By familiarizing employees with the internal reporting procedure and offering them protection by establishing and complying with a robust whistleblower policy. By paying sufficient attention to the design, existence and operation of procedures that make fraud more difficult. For example, by applying segregation of duties, the four-eye principle and strict compliance with internal guidelines and procedures.
Yet many companies still often lack a robust anti-fraud policy. Sometimes this is due to nonchalance or underestimation of fraud risks, due to the thought "that won't happen to us. However: how often do we read about the loyal employee who was always at the company and never went on vacation, but was eventually exposed as a fraudster? How often do we read about the administrator or treasurer who was supposed to watch the pennies neatly, but in the meantime transferred money to himself or made a cash grab? How often are senior employees and managers the ones who commit fraud because they know the business processes inside out, especially the weaknesses and loopholes.