Answer:
Knowledge about how your network can be compromised from the inside
Step-by-step explanation:
These threats can appear with disgruntled employees who perform a malicious acts (usually as revenge) and individuals who have stolen credentials, have socially engineered someone from inside into giving sensitive data, or have "dumpster dived" and collected improperly discarded and sensitive information that can lead to social engineering or a direct compromise. Naïve and negligent workers are also a massive factor in compromising security themselves. On a basic level, to prevent most of this, it is vital for everyone to know the security policy and methods of attack that can be used against them. Regular tests and reminders should reinforce how important this is.