IT Governance, Risk, and Compliance

Aug 22 2012   12:49AM GMT

IT Hardware Validity Checks – Part IV



Posted by: Robert Davis
Tags:
Configuration Management
Control Methods
Control Processes
Control Techniques
CPU
Digital Storage Devices
EDI
Electronic Commerce
Electronic Data Interchange
Feedback Control
Firmware
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Information Communication Technology
Information Security
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Some IT configurations are capable of assigning whole sections of memory for prescribed operations, programs, and/or data. These assigned sections of memory can be protected by a hardware address validity check. This type of control is also known as storage protection.

Address validity checks are also used in disk drives. When employed, firmware commonly compares the address on a disk pack requested in a write instruction with the set of valid disk storage locations.

Verification constraint of an IT hardware validity check

Where installed, the IT hardware validity check compares each action with the set of rules to ensure that it is indeed appropriate. Nevertheless, the limitation of an IT hardware validity check is that it will not detect an error when a valid symbolic representation is recorded improperly in place of another symbolic representation during data entry or transmission.

Sources:

Davis, Robert E. IT Auditing: Assuring Information Assets Protection. Mission Viejo, CA: Pleier Corporation, 2008. CD-ROM.

Boritz, Efrin J. IS Practitioners’ Views on Core Concepts of Information Integrity. Rev. ed. Ontario: University of Waterloo, 2004. 9

Gleim, Irvin N. CIA Examination Review. 3rd ed. Vol. 1. Gainesville, FL: Accounting Publications, 1989. 284

Watne, Donald A. and Peter B. B. Turney. Auditing EDP Systems. Englewood Cliffs, NJ: Prentice-Hall, 1984. 232-3

View Part I of the IT Hardware Validity Checks series here

 

Post Notes: “IT Hardware Validity Checks – Part IV” was originally published through Suite101.com under the title “IT Hardware Validity Checks”.

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