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Malicious insider

As explained in Grokking Web Application Security

A malicious insider is an employee or contractor who misuses authorized access to harm an organization or disclose its information.

A malicious insider is a rogue employee or contractor who uses their position to sell or leak company secrets, expose intellectual property, or cause other harm. Unlike an outside attacker, this person may already have legitimate access, making the risk especially difficult to prevent. section 1.1

Limit sensitive data to people who need it for their work. Need-to-know access reduces the amount of information a bad actor can reach if an employee or contractor turns against the organization. section 1.1

Insider leak scenario

A contractor with access to confidential company information decides to leak or sell it. Restricting that contractor to only the data required for the assignment narrows the potential exposure. section 1.1

How Grokking Web Application Security covers it

How deep it goes
Defines malicious insiders and gives need-to-know access as a mitigation without detailing implementation or monitoring.
Examples
Uses rogue employees or contractors who sell or leak company secrets or intellectual property.
What you can do after
Apply need-to-know data access to reduce a malicious insider’s potential reach.
How it connects
Connects insider harm with social engineering, phishing, spear phishing, ransomware, and the dark web.

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Grokking Web Application Security. The section links point to the parts of the book it draws on.