Analyzing the Windows SRUM Database
August 15th, 2025 by Oleg Afonin
When it comes to Windows forensics, some of the most valuable evidence can be stored deep inside system directories the average user never touches. One such source of evidence is the System Resource Usage Monitor (SRUM) database. Introduced in Windows 8 and still shipping today with the latest Windows 11 updates, SRUM collects detailed historical records about application usage and network activity. This database is a perfect source of data for reconstructing the user’s activities during an investigation. In this article, we’ll review the available types of data and demonstrate a way to access the SRUM database by using a bootable tool.
Technical and Legal Implications of iOS File System Acquisition
February 21st, 2019 by Vladimir Katalov
There has been a lot of noise regarding GrayKey news recently. GrayKey is an excellent appliance for iOS data extraction, and yes, it can help access more evidence. As always, the devil is in the detail.
Physical Extraction and File System Imaging of iOS 12 Devices
February 21st, 2019 by Oleg Afonin
The new generation of jailbreaks has arrived for iPhones and iPads running iOS 12. Rootless jailbreaks offer experts the same low-level access to the file system as classic jailbreaks – but without their drawbacks. We’ve been closely watching the development of rootless jailbreaks, and developed full physical acquisition support (including keychain decryption) for Apple devices running iOS 12.0 through 12.1.2. Learn how to install a rootless jailbreak and how to perform physical extraction with Elcomsoft iOS Forensic Toolkit.
iPhone Physical Acquisition: iOS 11.4 and 11.4.1
February 5th, 2019 by Vladimir Katalov
The two recent jailbreaks, unc0ver and Electra, have finally enabled file system extraction for Apple devices running iOS 11.4 and 11.4.1. At this time, all versions of iOS 11 can be jailbroken regardless of hardware. Let’s talk about forensic consequences of today’s release: keychain and file system extraction.
Identifying SSD Controller and NAND Configuration
January 31st, 2019 by Oleg Afonin
In our previous article Why SSDs Die a Sudden Death (and How to Deal with It) we talked about SSD endurance and how it’s not the only thing affecting real life reliability. In that article, we assumed that manufacturers’ specifications of certain SSD models remain similar for a given SSD model. In fact, this is not the case. Quite a few manufacturers play tricks with consumers, releasing a certain SSD model with top notch specifications only to downgrade them at some point during the production cycle (but certainly after receiving its share of glowing reviews). While some OEMs do note the change at least in the revision number, the rest will just quote the small print allowing them to “change specifications at any time without prior notice”. We’ve seen well known SSD manufacturers switching from reliable MLC NAND to planar TLC trash within the same model (and zero notice to potential buyers). How can you tell which NAND configuration your particular SSD drive employs and whether or not it lives up to your expectations? Read along to find out.
Securing and Extracting Health Data: Apple Health vs. Google Fit
January 30th, 2019 by Oleg Afonin
Today’s smartphones and wearable devices collect overwhelming amounts of data about the user’s health. Health information including the user’s daily activities, workouts, medical conditions, body measurements and many other types of information is undoubtedly one of the most sensitive types of data. Yet, smartphone users are lenient to trust this highly sensitive information to other parties. In this research, we’ll figure out how Apple and Google as two major mobile OS manufacturers collect, store, process and secure health data. We’ll analyze Apple Health and Google Fit, research what information they store in the cloud, learn how to extract the data. We’ll also analyze how both companies secure health information and how much of that data is available to third parties.
Apple iTunes: Standalone vs. Microsoft Store Edition
January 23rd, 2019 by Oleg Afonin
Since April 2018, Apple made iTunes available to Windows 10 users through the Microsoft Store. While the stand-alone download remains available from Apple’s Web site, it is no longer offered by default to Windows 10 users. Instead, visitors are directed to Microsoft Store, which will handle the installation and updates of the iTunes app.
Why SSDs Die a Sudden Death (and How to Deal with It)
January 18th, 2019 by Oleg Afonin
Many thanks to Roman Morozov, ACELab technical support specialist, for sharing his extensive knowledge and expertise and for all the time he spent ditching bugs in this article.
Life after Trim: Using Factory Access Mode for Imaging SSD Drives
January 16th, 2019 by Oleg Afonin
Many thanks to Roman Morozov, ACELab technical support specialist, for sharing his extensive knowledge and expertise and for all the time he spent ditching bugs in this article.
A New Method for Decrypting WhatsApp Backups
December 20th, 2018 by Vladimir Katalov
WhatsApp remains one of the most popular instant messengers. With more than 1.5 billion users and about half billion daily active users, WhatsApp sends over 100 billion messages per day. WhatsApp is secure thanks to end-to-end encryption to make intercepted messages impossible to decrypt. While this is great news to consumers and privacy advocates, it is also bad news for the law enforcement. Once an expert accepts to access the suspect’s WhatsApp communication history, they will struggle with the encryption and demand for a vendor-provided backdoor (WhatsApp: The Bad Guys’ Secret Weapon).
Six Ways to Decrypt iPhone Passwords from the Keychain
December 18th, 2018 by Vladimir Katalov
In Apple’s world, the keychain is one of the core and most secure components of macOS, iOS and its derivatives such as watchOS and tvOS. The keychain is intended to keep the user’s most valuable secrets securely protected. This includes protection for authentication tokens, encryption keys, credit card data and a lot more. End users are mostly familiar with one particular feature of the keychain: the ability to store all kinds of passwords. This includes passwords to Web sites (Safari and third-party Web browsers), mail accounts, social networks, instant messengers, bank accounts and just about everything else. Some records (such as Wi-Fi passwords) are “system-wide”, while other records can be only accessed by their respective apps. iOS 12 further develops password auto-fill, allowing users to utilize passwords they stored in Safari in many third-party apps.
