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belkasoft has written 6 posts for Forensic Focus – Articles

Recovering Evidence from SSD Drives in 2014: Understanding TRIM, Garbage Collection and Exclusions

We published an article on SSD forensics in 2012. SSD self-corrosion, TRIM and garbage collection were little known and poorly understood phenomena at that time, while encrypting and compressing SSD controllers were relatively uncommon. In 2014, many changes happened. We processed numerous cases involving the use of SSD drives and gathered a lot of statistical … Continue reading

Understanding Rootkits: Using Memory Dump Analysis for Rootkit Detection

Dmitry Korolev, Yuri Gubanov, Oleg Afonin research@belkasoft.com © Belkasoft Research, 2013 Every rootkit employs a wide range of masquerading techniques to prevent its detection. Anti-virus and anti-malware tools must perform what is called, in forensic terms, “live box analysis”, performing a real-time scan of a live system. No wonder rootkits can actively resist detection by … Continue reading

Detecting Forged (Altered) Images

Are digital images submitted as court evidence genuine or have the pictures been altered or modified? We developed a range of algorithms performing automated authenticity analysis of JPEG images, and implemented them into a commercially available forensic tool. The tool produces a concise estimate of the image’s authenticity, and clearly displays the probability of the … Continue reading

Catching the ghost: how to discover ephemeral evidence with Live RAM analysis

Oleg Afonin and Yuri Gubanov, contact@belkasoft.com © Belkasoft Research, 2013 Belkador Dali. “Losing volatile Evidence”. All rights reserved.  Ephemeral Evidence Until very recently, it was a standard practice for European law enforcement agencies to approach running computers with a “pull-the-plug” attitude without recognizing the amount of evidence lost with the content of the computer’s volatile … Continue reading

Why SSD Drives Destroy Court Evidence, and What Can Be Done About It

by Yuri Gubanov yug@belkasoft.com, Oleg Afonin aoleg@voicecallcentral.com Belkasoft Ltd. http://belkasoft.com Abstract Solid State drives (SSD) introduced dramatic changes to the principles of computer forensics. Forensic acquisition of computers equipped with SSD storage is very different of how we used to acquire PCs using traditional magnetic media. Instead of predictable and highly possible recovery of information the … Continue reading

Retrieving Digital Evidence: Methods, Techniques and Issues

by Yuri Gubanov yug@belkasoft.com Belkasoft Ltd. http://belkasoft.com Abstract This article describes the various types of digital forensic evidence available on users’ PC and laptop computers, and discusses methods of retrieving such evidence. Download article in PDF format Introduction A recent research conducted by Berkeley scientists concluded that up to 93% of all information never leaves the digital domain. This … Continue reading

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