Glossary - MSAB

MSAB Digital Forensics Glossary

Key Terms and Definitions

Welcome to Our Digital Forensics Glossary — A resource for clear, concise definitions of key terms used in digital forensic investigations. This glossary includes terminology used in the field of smartphone investigations, mobile data extraction, and the analysis of digital evidence from mobile devices.

As mobile phones become central to cybercrime and digital investigations, it’s essential to understand critical concepts such as IMEI, mobile data acquisition, app artifacts, and SIM card analysis. You’ll also find definitions of broader digital forensics terms like hash values, metadata, and chain of custody — all explained in a straightforward, accessible format. Whether you’re a mobile forensics specialist, law enforcement officer, cybersecurity professional, or student, this glossary offers up-to-date explanations to help you navigate the rapidly evolving field of mobile forensics.

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False Positive

An erroneous identification of benign activity or data as malicious or significant in a forensic analysis, requiring careful validation to avoid misleading conclusions.

Faraday Bag

A shielding enclosure used to block electromagnetic signals, preventing remote access or wiping of digital devices during evidence collection and transport.

Fastboot Mode

A diagnostic mode on Android devices that allows low-level access for flashing firmware or extracting data, often utilized in mobile forensics to bypass security restrictions.

FAT (File Allocation Table)

A file system used on many storage devices (e.g., USB drives, SD cards), analyzed in forensics to recover files, metadata, or deleted data from its simple structure.

FAT32 (File Allocation Table 32)

FAT32, or File Allocation Table 32, is a widely used file system in mobile devices, particularly for external storage media such as SD cards and USB drives. It was introduced as an improvement over the older FAT16 file system, offering support for larger partition sizes and more efficient storage management. Understanding FAT32 is essential for […]

FBE (File Based Encryption) – Mobile Device Forensics

A method where each file on a mobile device’s partition is individually encrypted, requiring forensic tools to decrypt specific files for evidence analysis. Key Features of FBE Per-File Encryption: FBE encrypts each file individually using a unique key derived from the user’s credentials. This approach provides better security and flexibility compared to FDE. Direct Boot […]

File Carving

A forensic technique to recover files from unallocated space or damaged media by identifying file signatures, without relying on file system metadata.

File Extension

The suffix of a filename (e.g., .jpg, .exe) indicating its format, examined in forensics to verify file types or detect attempts to disguise malicious files.

File Header

The initial portion of a file containing metadata about its type and structure, used in forensics for file carving or identifying corrupted or obscured data.

File Metadata

Data about a file (e.g., creation date, size, author), extracted in forensics to establish timelines, ownership, or evidence of tampering.

File Recovery

The process of retrieving deleted, lost, or corrupted files from storage media, a key forensic technique to uncover hidden or removed evidence.

File Signature

A unique sequence of bytes at the start of a file identifying its type, used in forensics to detect and recover files even if their extensions are altered or missing.

File System

The organizational structure (e.g., NTFS, FAT32) that manages data on a storage device, analyzed in forensics to locate files, recover deleted data, or detect anomalies.

File System – Mobile Device Forensics

In tools like Physical Analyzer, a high-level reference to the complete collection of partitions, folders, and files on a mobile device, analyzed to extract evidence.

File System Extraction – Mobile Device Forensics

A forensic process that retrieves files embedded in a mobile device’s memory, capturing artifacts like photos, messages, or app data for analysis. File system extraction is a fundamental technique in mobile forensics that involves acquiring and analyzing data stored in a device’s file system. The file system is a critical component of a mobile device’s […]

File System Extraction Forensics

A type of forensic analysis involving the extraction of data from a device’s file system, focusing on recovering structured data like files and directories.

File System Forensics

The examination of a device’s file system to extract evidence, including active files, deleted data, and metadata, using specialized tools and techniques.

File Tags – Digital Forensics

Labels or identifiers applied to specific file types in extracted data, aiding forensic examiners in categorizing and prioritizing evidence for analysis.

File Viewers – Mobile Device Forensics

Built-in tools in software like Physical Analyzer for viewing native file types (e.g., images, documents), enabling examiners to inspect evidence directly within the platform.

Fingerprint – Mobile Device Forensics

Refers to biometric data from a mobile device’s fingerprint sensor (e.g., in the home button), potentially analyzed or bypassed in forensics to unlock devices.

Firmware

The low-level software embedded in a device controlling its hardware, sometimes analyzed or extracted in forensics to uncover vulnerabilities or hidden data.

Firmware Forensics

The investigation of a device’s firmware to detect modifications, backdoors, or evidence of tampering, often requiring reverse engineering skills.

FISMA, Federal Information Security Management Act – Investigation and Evidence Management

A U.S. law mandating security standards for federal information systems, relevant in forensics for ensuring evidence handling complies with regulatory requirements.

Flash Memory

Non-volatile storage (e.g., in USB drives, SSDs) that retains data without power, commonly analyzed in forensics for evidence recovery due to its widespread use.

Forensic Acquisition

The process of collecting digital evidence from a source in a manner that preserves its integrity and admissibility, such as creating a bit-for-bit image of a drive.

Forensic Acquisition Tools Forensic Examination Tools

Software and hardware solutions (e.g., MSAB XRY, MSAB XAMN) designed for acquiring, analyzing, and reporting digital evidence in a forensically sound manner.

Forensic Analysis

The systematic examination of digital evidence to uncover facts, reconstruct events, or identify perpetrators in an investigation. Forensic data analytics is the process of applying analytical techniques to digital evidence collected during a mobile forensic investigation. It involves processing, examining, and interpreting large volumes of data to uncover patterns, anomalies, and insights that can help […]

Forensic Analysis of WhatsApp

A specialized subset of mobile forensics focused on the extraction, decryption, and analysis of data from the WhatsApp application. Because WhatsApp uses end-to-end encryption, forensic examiners require specialized tools to access local backups, recover deleted messages, and validate chat artifacts. The Encryption Challenge WhatsApp is renowned for its security, utilizing end-to-end encryption for messages in […]

Forensic Artifact

A piece of digital evidence (e.g., log entry, deleted file) left behind by user activity or system processes, analyzed to support forensic findings.

Forensic Audit

A detailed review of digital systems and data to detect fraud, misconduct, or compliance issues, often conducted with forensic tools and methodologies.

Forensic Copy

An exact, bit-for-bit duplicate of a digital storage medium, created to preserve original evidence while allowing analysis without risk of alteration.

Forensic Data Acquisition Methods

Forensic data acquisition is a critical step in mobile forensics, as it involves collecting and preserving digital evidence from mobile devices in a forensically sound manner. There are several acquisition methods used in mobile forensics, each with its own advantages, limitations, and implications for data recovery and analysis. Logical Acquisition Logical acquisition involves extracting data […]

Forensic Data Authentication

Forensic data authentication is the process of verifying the integrity and authenticity of digital evidence collected during a mobile forensic investigation. It ensures that the data has not been altered, tampered with, or corrupted since its acquisition, maintaining the evidence’s admissibility in legal proceedings. Authentication is a critical aspect of mobile forensics, as it establishes […]

Forensic Data Carving

Forensic data carving is a technique used in mobile forensic investigations to recover deleted, fragmented, or unallocated data from digital storage media. It involves searching for and extracting data based on specific file signatures or patterns, rather than relying on file system metadata. Data carving is a crucial technique for recovering evidence that may have […]

Forensic Data Carving Algorithms

Forensic data carving algorithms are specialized techniques used to recover deleted, fragmented, or unallocated data from digital storage media in mobile forensic investigations. These algorithms are designed to search for and extract data based on specific file signatures, patterns, or structures, enabling investigators to recover evidence that may not be readily accessible through traditional file […]

Forensic Data Correlation

Forensic data correlation is the process of identifying and analyzing relationships, connections, and patterns between different data points or sources in a mobile forensic investigation. It involves linking and combining information from various artifacts, such as call logs, messages, location data, and application data, to establish a comprehensive understanding of the events, activities, and interactions […]

Forensic Data Decryption

Forensic data decryption is the process of converting encrypted data from mobile devices into a readable format during a forensic investigation. As mobile devices increasingly employ encryption to protect user data, decryption has become a critical aspect of mobile forensics. Investigators must decrypt encrypted data to access and analyze the evidence stored on the device. […]

Forensic Data Deduplication

Forensic data deduplication is the process of identifying and removing duplicate copies of data from the evidence collected during a mobile forensic investigation. Mobile devices often contain multiple copies of the same files or data, such as backups, synchronized data, or cached files. Deduplicating this data helps reduce the volume of data to be analyzed, […]

Forensic Data Export

Forensic data export is the process of extracting and saving digital evidence from mobile devices or forensic tools in a format suitable for further analysis, sharing, or presentation. Exporting data allows investigators to work with the evidence using various tools, collaborate with other stakeholders, and prepare the evidence for court proceedings. Importance of Forensic Data […]

Forensic Data Extraction Techniques

Forensic data extraction is the process of acquiring digital evidence from mobile devices using various techniques. The choice of extraction technique depends on factors such as the type of device, the state of the device (powered on or off), the level of access required, and the specific data sought. Each technique has its own advantages, […]

Forensic Data Filtering

Forensic data filtering is the process of refining and narrowing down the collected digital evidence in a mobile forensic investigation to focus on the most relevant and pertinent information. With the increasing storage capacities of mobile devices, the amount of data acquired during an investigation can be overwhelming. Data filtering techniques help investigators prioritize their […]

Forensic Data Indexing

Forensic data indexing is the process of organizing and optimizing the collected digital evidence in a mobile forensic investigation to enable efficient searching, retrieval, and analysis. Indexing creates a structured and searchable catalog of the extracted data, allowing investigators to quickly locate and access specific information without having to manually sift through the entire dataset. […]

Forensic Hash

A cryptographic value (e.g., MD5, SHA-1) generated from digital evidence to verify its integrity and authenticity throughout the forensic process.

Forensic Image

A complete, sector-by-sector replica of a storage device (e.g., hard drive, phone memory), used in forensics to preserve and analyze evidence.

Forensic Imaging

The process of creating a forensic image of a digital device or storage medium, ensuring all data, including deleted or hidden content, is captured intact.

Forensic Imaging

Also known as a “physical extraction,” forensic imaging is the process of creating a bit-by-bit copy of a mobile device’s entire storage medium. This creates a complete digital replica (image) of the flash memory, including unallocated space, deleted files, and hidden system partitions, allowing for deep analysis without altering the original evidence. Logical vs. Physical […]

Forensic Phone Recovery Partition – Mobile Device Forensics

An extraction method performing a physical extraction while a mobile device is in recovery mode, allowing access to data that might otherwise be restricted.

Forensic Report

A formal document detailing the findings, methods, and evidence from a digital forensic investigation, prepared for legal or investigative purposes.

Forensic Software

Specialized tools (e.g., MSAB XRY, MSAB XRY Pro, MSAB XAMN Pro) designed for acquiring, analyzing, and reporting digital evidence in a forensically sound manner.

Forensic Triage

A rapid, on-scene assessment of digital devices to prioritize evidence collection and identify critical data before full forensic analysis.

Forensically Sound – Digital Forensics

A term describing data extracted, analyzed, and preserved in a manner that ensures its integrity and admissibility in court, adhering to strict forensic standards.

Fragmentation

The scattering of file data across non-contiguous sectors on a storage device, complicating forensic recovery efforts and requiring advanced tools to reconstruct.

Fraud Shop – Crypto Forensics

Online marketplaces selling illicit data (e.g., PII, stolen credentials), investigated in crypto forensics to trace cryptocurrency payments and identify perpetrators.

Free Space

Unallocated areas on a storage device where deleted data may reside, analyzed in forensics to recover evidence that has not yet been overwritten.

Full Disk Encryption – Mobile Device Forensics

Encryption of an entire mobile device partition with a single key, requiring forensic techniques to decrypt and access all data for analysis.

Full Disk Encryption (FDE)

A security measure that encrypts an entire storage device, posing a challenge in forensics unless the decryption key or method is obtained. FDE, or Full Disk Encryption, is a security feature that encrypts the entire storage media of a mobile device, including the operating system, applications, and user data. FDE is designed to protect data […]

Full File System Extraction – Mobile Device Forensics

A comprehensive extraction of a mobile device’s file system, capturing all accessible files, directories, and metadata for detailed forensic examination.

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