Insider attack

An insider attack involves someone from the inside, such as a disgruntled employee, attacking the network Insider attacks can be malicious or no malicious.

Malicious insiders intentionally eavesdrop, steal, or damage information; use information in a fraudulent manner; or deny access to other authorized users.

No malicious attacks typically result from carelessness, lack of knowledge, or intentional circumvention of security for such reasons as performing a task