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The Event log application is a place in the administration interface where the system records events and activities. From a security point of view, the events logged into the event log are mainly:
You can find more information about event log settings in Working with the system event log.
The security debug is a part of the debugging interface in Kentico. You can find the security debug interface in the Debug application on the Security tab.
Enabling the security debug
If you cannot see the Security tab, you need to enable the security debug in Settings -> System -> Debug by selecting the Enable security debug option.
The security debug allows you to view user security checks performed by the system. Information stored in this section includes: