Forensic Data Acquisition With Search Authorization Filtering
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Solution Overview
Problem
Current digital forensic investigation methods often acquire and search data beyond the scope of authorized search parameters, raising privacy concerns and legal ambiguities.
Innovation Solution
A system and method for filtering data on a target device before acquisition, using search authorization parameters to identify and acquire only compliant data items, with logging and scanning functions to ensure compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If data is acquired before filtering, then the completeness of data acquisition is improved, but privacy protection and legal compliance deteriorate
Solution Approach 1:
The system performs filtering operations before data acquisition by creating and applying filter criteria based on search authorization parameters. The investigator device scans the target dataset, identifies compliant data items, and only acquires those that meet the authorization criteria, preventing unauthorized data transfer before it occurs.
Solution Approach 2:
The data acquisition process is divided into distinct stages: parameter extraction from search authorization, generation of filter criteria, scanning and identification of compliant data items, and selective acquisition. This segmentation allows compliance checking to occur independently before full data transfer.
2Object-affected harmful factors
If filtering is performed before acquisition, then privacy protection and legal compliance are improved, but data acquisition efficiency deteriorates
Solution Approach 1:
Filter criteria are generated in advance from search authorization parameters before the scanning process begins. This preliminary preparation of filtering rules enables efficient during-scan evaluation without requiring post-acquisition filtering, maintaining productivity while ensuring compliance.
3Measurement precision
If comprehensive scanning is performed, then measurement accuracy of compliance is improved, but time consumption deteriorates
Solution Approach 1:
The system performs comprehensive scanning of all data items to ensure accurate compliance verification, but only acquires data items that meet the filter criteria. The excessive scanning action ensures no compliant data is missed, while selective acquisition prevents unnecessary time spent processing non-compliant data.
Solution Approach 2:
Each data item is evaluated against the filter criteria during scanning, with automatic identification of compliant items. The system self-identifies which data items meet authorization requirements without requiring manual review, reducing time consumption while maintaining measurement accuracy.
Data Source
AI summary
A system and method for selectively acquiring forensic data from at least one electronic storage medium of a target device to comply with a search authorization is provided. The method includes: configuring a set of search criteria based on at least one authorized search parameter extracted from a search authorization; configuring a forensic data acquisition module based on the set of search criteria; scanning a target dataset stored in the at least one electronic storage medium of the target device using the forensic data acquisition module to identify data items that are compliant with the set of search criteria; acquiring the compliant data items from the target device to an external data storage medium; and generating a log comprising a record for each scanned data item in the target dataset specifying whether the scanned data item met the search criteria and whether the scanned data item was acquired.