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NCJ Number: NCJ 209832   Add to Shopping cart   Find in a Library
Title: Test Results for Software Write Block Tools: PDBLOCK Version 2.00
  Document URL: PDF 
Corporate Author: Office of Law Enforcement Standards (OLES)
United States of America
Date Published: 06/2005
Page Count: 88
  Annotation: This report presents the results from testing PDBLOCK Version 2.00, copyrighted by Digital Intelligence, Inc., in 1999, against Software Write Block Tool Specification & Test Plan Version 3.0.
Abstract: This specification sets the following top-level tool requirements: it shall not allow a protected drive to be changed; it shall not prevent obtaining any information from or about any drive; and it shall not prevent any operations to a drive that is not protected. All 40 test cases listed in the specification were applied to PDBLOCK Version 2.00. For all test cases run, the tool always blocked all write commands sent to a protected drive; however, the tool did not block some commands from the configuration and miscellaneous categories that were either undefined (invalid) or outmoded and not routinely used by current software. These commands in current BIOS implementations do not write to a hard drive, but in the future they could be defined such that they would change the content or accessibility of a protected drive. In the test specification these commands are therefore included in categories that should be blocked. Five commands in the configuration category were not blocked: Initialize Drive parameters (0x09), PS/2 ESDI Diagnostic (0x0E), PC/XT Controller Ram Diagnostic (0x12), the controller drive diagnostic command (0x13), and Controller Internal Diagnostic (0x14). The tool only blocked three commands in the miscellaneous category (command codes 0x1A, 0x22, and 0xED). For all test cases run, the tool always allowed commands to obtain information from any protected drives; and the tool always allowed any command to access any unprotected drives for all test cases run. Extensive tabular data
Main Term(s): Computer software
Index Term(s): Computer privacy and security ; Computer abuse ; Computer crime prevention measures
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Grant Number: 2003-IJ-R-029
Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America
Type: Report (Technical) ; Test/Measurement
Country: United States of America
Language: English
Note: NIJ Special Report; downloaded November 8, 2005.
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