Is there a single standard definition for a computer security incident that all organizations adhere to?

• A. True
• B. False
• C. Not sure
• D. It depends

Answer: (B)

There isn’t a single, universally adopted definition of a computer security incident. Different organizations follow different frameworks and policies, which means what counts as an incident can vary. For example, some standards define an incident as any violation or imminent threat to security policies, while others focus on the incident management lifecycle or on regulatory requirements. Because definitions are adapted to policy, risk tolerance, and industry needs, no one definition fits all organizations. That’s why the statement is false: there isn’t one standard definition that everyone adheres to.

In practice, you’ll align with the framework your organization uses (such as NIST or ISO/IEC 27035) and ensure your incident criteria are clearly documented so responders know when to act.