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Written by DFMag


Bloom Filters

In our feature article, Richard Carbone who works for Defence R&D Canada, introduces the application of Bloom Filters into Digital Forensics as a method of identifying hard to detect data from partial evidentiary hashes. You may have heard of Bloom Filters, but did you know that modified versions of them could be used for disk forensics? Although straightforward to use, understanding them will require briefly looking at the mathematics behind them. In this article, we will look at the theory behind Bloom filters and how we might use them for disk based digital forensics. We will be following up this article with a second part that will demonstrate several real-world example applications of modified Bloom filter-based forensics.




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Coming up in the Next issue of Digital Forensics Magazine

Coming up in Issue 34 on sale from February 2018:


Device Forensics in the Internet of Things

As more businesses and consumers adopt IoT devices, privacy violations and cyber-attacks by malicious actors will become commonplace due to the insecure IoT infrastructure. Read More »

Data Destruction In Current Hard Disks & Data Destruction Techniques

Data destruction is a process traditionally applied using physical techniques, aiming at the completely destruction of the hard disk, however, there is an increasing interest in the use of logical techniques for data destruction, that allow reusing the physical device. Read More »

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Faster Searching For Known Illegal Content

Cryptographic (“MD5”) hash searching for known illegal material is one of the most thorough methods of digital forensic investigation. However, the technique is hampered by the ever-increasing size of media being examined, and the size of the hash list being searched. Read More »

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