Final answer:
Malicious insider threats in an organization can be indicated by a persistent pessimistic attitude, signs of personal issues such as financial distress, attempts to access unauthorized areas or data, and making personal backups of confidential information. All the options are seems to be correct.
Step-by-step explanation:
Red flags that might indicate someone has become a malicious insider threat in an organization include several behavioral indicators. Firstly, a pessimistic attitude towards the organization and general dissatisfaction with their work could be a sign of discontent that might motivate harmful actions against the company.
Secondly, when an employee shows signs of significant personal issues, such as financial distress, they may be more susceptible to committing acts detrimental to the organization's security or integrity, possibly as a means to resolve their problems.
Thirdly, attempts to gain unauthorized access to systems, data, and/or secured areas are a clear warning sign of malicious intent.
Lastly, making personal backups of confidential data that do not belong to them is a direct infraction of security policies and can indicate an intention to use that data inappropriately.