Abstract: On-line system for monitoring user activity on an IT device, the system including a control application (APP) and a monitoring application (AG), where the control application (APP) is situated on a central server (SRV) on the Internet, and the monitoring application (AG) is installed on the monitored IT device (IT). The monitoring application (AG) can be interconnected with the control device (APP) by the Internet. The monitoring application (AG) stores the collected data in a local data store (AG-DB), and subsequently the stored data is transmitted via the Internet to the control application (APP). The collected data is processed by the control application (APP) and subsequently the collected data is stored in the database (DB).