Information system is completely technology related process in today‘s business organization. There is huge scope to create problems, frauds and destruction of information system the external and internal people of the organization. Therefore the effective information system controls can minimize the errors, frauds and destructions in the information system of organization. The information system are divided in to four types
• System control
• Procedural control
• Facility control
• Other control
System control attempt to ensure the accuracy, validity and propriety of information system activities. It ensure that proper data entry, processing techniques, storage methods and out system. It include input control, output control and storage control
Procedural control includes standard procedures and documentation, authorization requirement, disaster recovery etc.
Facility control includes network control, encryption, firewall, physical protection control, Biometric control etc
Other control include programs of preventive maintenance of hardware and software updates and maintenance, adequate electrical power supply, air conditioning, humidity control, fire prevention standards, highly trained data entry personnel etc.