Learn in the textbookHuman Security Measures
DefinitionMonitoring (監視) means recording and observing system activity and user actions to spot early signs of anomalies or misconduct.
ExplanationObservation draws on logs that record operations and traffic, as well as entry and exit records. A mechanism that watches how programs run and stops them when they act unusually, such as rewriting file after file, is called behavior detection (振る舞い検知). Because knowing they are watched makes people think twice, monitoring deters misconduct as well as detecting it.
AnalogyIt is like a security camera in a shop. Its mere presence makes would-be shoplifters hesitate, and if something happens you can go back through the footage.
Memory hookThe word monitor comes from the Latin for "one who warns." Letting people know they are being watched is itself a warning.