A netbook is a small, lightweight laptop built for portability and basic everyday tasks such as web browsing, email, and note-taking. Compared with full-size notebooks, netbooks usually have smaller screens, slower processors, and limited storage, which makes them inexpensive and easy to carry but not ideal for heavy workloads.
In cyber security, netbooks matter because they often run minimal hardware and may stay in service longer than newer machines. That can make them useful as portable admin laptops, field audit devices, or recovery systems. At the same time, older netbooks are common targets for attackers when they still run unsupported operating systems or weak local protections. Security teams look for patching, disk encryption, and endpoint hardening on these small systems, since their convenience can become a risk if they are lost, reused, or left exposed.