Insider Threat
Definition
An insider threat is a security risk that originates from within an organization, such as an employee, contractor, or trusted partner with legitimate access. Insider threats can be malicious, such as theft or sabotage, or unintentional, such as mistakes and unsafe behavior that lead to data loss or compromise.
Examples
- A disgruntled employee copies sensitive customer data to a personal drive before leaving the company.
- A contractor with broad access accidentally shares a private file link publicly, exposing internal documents.
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When most people think about cyber attacks, they picture an external hacker. Insider threats are different because the person already has some level of trust and access. That makes insider incidents harder to prevent and harder to detect. The insider may know what matters most, where data is stored, and which actions look normal inside the organization.
Insider threat does not always mean a “bad person.” Many insider incidents are caused by mistakes, rushed decisions, or lack of awareness. A strong security program treats insider risk as a mix of people, process, and technology.
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