What are three kinds of logs recorded in Event Viewer?
A computer running any version of Microsoft® Windows® XP records events in three kinds of logs: application, security, and system.
The application log contains events logged by programs. For example, a database program might record a file error in the application log. Program developers decide which events to monitor.
The security log records events like valid and invalid logon attempts and events related to resource use like creating, opening, or deleting files or other objects. An administrator can specify what events are recorded in the security log. For example, if you have enabled logon auditing, attempts to log on to the computer are recorded in the security log.
The system log contains events logged by Windows XP system components. For example, the failure of a driver or other system component to load during startup is recorded in the system log. Windows XP predetermines the event types logged by system components.