Computer vision is a rapidly evolving field, giving rise to powerful new tools and techniques in digital forensic investigation, and shows great promise for novel digital forensic applications. One such application, indoor multimedia geolocation, has the potential to become a crucial aid for law enforcement in the fight against human trafficking, child exploitation, and other serious crimes. While outdoor multimedia geolocation has been widely explored, its indoor counterpart remains underdeveloped due to challenges such as similar room layouts, frequent renovations, visual ambiguity, indoor lighting variability, unreliable GPS signals, and limited datasets in sensitive domains. This paper introduces a pipeline that uses electrical sockets as consistent indoor markers for geolocation, since plug socket types are standardised by country or region. The three-stage deep learning pipeline detects plug sockets (YOLOv11, mAP@0.5 = 0.843), classifies them into one of 12 plug socket types (Xception, accuracy = 0.912), and maps the detected socket types to countries (accuracy = 0.96 at >90 % threshold confidence). To address data scarcity, two dedicated datasets were created: socket detection dataset of 2328 annotated images expanded to 4074 through augmentation, and a classification dataset of 3187 images across 12 plug socket classes. The pipeline was evaluated on the Hotels-50K dataset, focusing on the TraffickCam subset of crowd-sourced hotel images, which capture real-world conditions such as poor lighting and amateur angles. This dataset provides a more realistic evaluation than using professional, well-lit, often wide-angle images from travel websites. This framework demonstrates a practical step toward real-world digital forensic applications. The code, trained models, and the data for this paper are available open source.
The National Institute of Standards and Technology (NIST) Computer Forensic Tool Testing (CFTT) programme has become the de facto standard for providing digital forensic tool testing and validation. However to date, no comprehensive framework exists to automate benchmarking across the diverse forensic tasks included in the programme. This gap results in inconsistent validation, challenges in comparing tools, and limited validation reproducibility. This paper introduces AutoDFBench 1.0, a modular benchmarking framework that supports the evaluation of both conventional DF tools and scripts, as well as AI-generated code and agentic approaches. The framework integrates five areas defined by the CFTT programme: string search, deleted file recovery, file carving, Windows registry recovery, and SQLite data recovery. AutoDFBench 1.0 includes ground truth data comprising of 63 test cases and 10,968 unique test scenarios, and execute evaluations through a RESTful API that produces structured JSON outputs with standardised metrics, including precision, recall, and F1 score for each test case, and the average of these F1 scores becomes the AutoDFBench Score. The benchmarking framework is validated against CFTT's datasets. The framework enables fair and reproducible comparison across tools and forensic scripts, establishing the first unified, automated, and extensible benchmarking framework for digital forensic tool testing and validation. AutoDFBench 1.0 supports tool vendors, researchers, practitioners, and standardisation bodies by facilitating transparent, reproducible, and comparable assessments of DF technologies.
Recent advances in AI-driven image generation have introduced new challenges for verifying the authenticity of digital evidence in forensic investigations. Modern generative models can produce visually consistent forgeries that evade traditional detectors based on pixel or compression artefacts. Most existing approaches also lack an explicit measure of anomaly intensity, which limits their ability to quantify the severity of manipulation. This paper introduces Vision-Attention Anomaly Scoring (VAAS), a novel dual-module framework that integrates global attention-based anomaly estimation using Vision Transformers (ViT) with patch-level self-consistency scoring derived from segmentation embeddings. The hybrid formulation provides a continuous and interpretable anomaly score that reflects both the location and degree of manipulation. Evaluations on the DF2023 and CASIA v2.0 datasets demonstrate that vaas achieves competitive F1 and IoU performance, while enhancing visual explainability through attention-guided anomaly maps. The framework bridges quantitative detection with human-understandable reasoning, supporting transparent and reliable image integrity assessment. The source code for all experiments and corresponding materials for reproducing the results are available open source.
The ever-increasing workload of digital forensic labs raises concerns about law enforcement's ability to conduct both cyber-related and non-cyber-related investigations promptly. Consequently, this article explores the potential and usefulness of integrating Large Language Models (LLMs) into digital forensic investigations to address challenges such as bias, explainability, censorship, resource-intensive infrastructure, and ethical and legal considerations. A comprehensive literature review is carried out, encompassing existing digital forensic models, tools, LLMs, deep learning techniques, and the use of LLMs in investigations. The review identifies current challenges within existing digital forensic processes and explores both the obstacles and the possibilities of incorporating LLMs. In conclusion, the study states that the adoption of LLMs in digital forensics, with appropriate constraints, has the potential to improve investigation efficiency, improve traceability, and alleviate the technical and judicial barriers faced by law enforcement entities.
In recent years, the adoption of Internet of Things (IoT) devices has transformed industries and daily life. However, the integration of real-time services and internet connectivity increases the risk of attackers exploiting network vulnerabilities. Investigating such vulnerabilities in Resource-Constrained Environments (RCEs) poses challenges due to limited computational capacity, power constraints, and the heterogeneity of IoT-generated data and traffic. To address these issues, this study proposes a framework integrating optimised artificial intelligence models trained on the CICIoT2023 and CSE-CIC-IDS2018 datasets. A Docker-based simulation replicates constrained environments and captures network traffic in real time. The framework continuously monitors resources and dynamically selects the most suitable AI model for attack detection. Once an attack is detected, the system captures and preserves digitally signed critical forensic artefacts, categorised into system metadata, event/resource logs, network data, and processes. The AI-based framework aligns with ISO/IEC 27043:2015 Digital Forensic Readiness principles, automating many manual procedures and reducing both time and human effort. The quantitative evaluation demonstrates the effectiveness of the proposed network forensic readiness framework to address the specific challenges of RCEs.
Embeddings remain the best way to represent image features, but do not always capture all latent information. This is still a problem in representation learning, and computer vision descriptors struggle with precision and accuracy. Improving image embedding with other features is necessary for tasks like image geolocation, especially for indoor scenes where descriptive cues can have less distinctive characteristics. This work proposes a model architecture that integrates image N-dominant colours and colour histogram vectors in different colour spaces with image embedding from deep metric learning and classification perspectives. The results indicate that the integration of colour features improves image embedding, surpassing the performance of using embedding alone. In addition, the classification approach yields higher accuracy compared to deep metric learning methods. Interestingly, different saturation points were observed for image colour-improved embedding features in models and colour spaces. These findings have implications for the design of more robust image geolocation systems, particularly in indoor environments.
Large language models (LLMs) have widespread adoption in many domains, including digital forensics. While prior research has largely centered on case studies and examples demonstrating how LLMs can assist forensic investigations, deeper explorations remain limited, i.e., a standardized approach for precise performance evaluations is lacking. Inspired by the NIST Computer Forensic Tool Testing Program, this paper proposes a standardized methodology to quantitatively evaluate the application of LLMs for digital forensic tasks, specifically in timeline analysis. The paper describes the components of the methodology, including the dataset, timeline generation, and ground truth development. In addition, the paper recommends the use of BLEU and ROUGE metrics for the quantitative evaluation of LLMs through case studies or tasks involving timeline analysis. Experimental results using ChatGPT demonstrate that the proposed methodology can effectively evaluate LLMbased forensic timeline analysis. Finally, we discuss the limitations of applying LLMs to forensic timeline analysis.
Generative AI (GenAI) and Large Language Models (LLMs) show great potential in various domains, including digital forensics. A notable use case of these technologies is automatic code generation, which can reasonably be expected to include digital forensic applications in the not-too-distant future. As with any digital forensic tool, these systems must undergo extensive testing and validation. However, manually evaluating outputs, including generated DF code, remains a challenge. AutoDFBench is an automated framework designed to address this by validating AI-generated code and tools against NIST's Computer Forensics Tool Testing Program (CFTT) procedures and subsequently calculating an AutoDFBench benchmarking score. The framework operates in four phases: data preparation, API handling, code execution, and result recording with score calculation. It benchmarks generative AI systems, such as LLMs and automated code generation agents, for DF applications. This benchmark can support iterative development or serve as a comparison metric between GenAI DF systems. As a proof of concept, NIST's forensic string search tests were used, involving more than 24,200 tests with five top-performing code generation LLMs. These tests validated the output of 121 cases, considering two levels of user expertise, two programming languages, and ten iterations per case with varying prompts. The results also highlight the significant limitations of the DF-specific solutions generated by generic LLMs.
Large Language Models (LLMs) have rapidly gained popularity in various fields, including Digital Forensics (DF), where they offer the potential to accelerate investigative processes. Although several studies have explored LLMs for tasks such as evidence identification, artifact analysis, and report writing, fine-tuning models for specific forensic applications remains underexplored. This article addresses this gap by proposing recommendations for fine-tuning LLMs tailored to DF tasks. A case study on chat summarization is presented to showcase the applicability of the recommendations, where us evaluate multiple fine-tuned models to assess their performance. The study concludes with sharing the lessons learned from the case study.
Industrial control systems (ICS) are the backbone of modern manufacturing facilities. Due to the distributed nature of ICS hardware in their deployment environment, they are often networked through Ethernet, opening up a window for network-based attacks. Preventive security measures, such as constant packet capture and inspection, are impractical due to the computational overhead required. Therefore, computationally feasible trigger mechanisms are needed that can activate security, as well as on-demand forensic readiness features, in the infrastructure. This work proposes an approach to monitor ICS network infrastructure using unintentional electromagnetic (EM) radiation emitted by Ethernet network cables during their regular operation. An empirical evaluation highlights that it is possible to detect various types of denial of service (DoS) attacks through EM emission patterns of Ethernet cables with considerable accuracy (HTTP Flood = 99.70%, TCP Flood = 73.22%, UDP Flood = 69.95%). Based on the experimental findings, this work introduces an architecture for the ICS infrastructure to be forensic-ready with minimal computational resources while being independent and non-invasive to the infrastructure itself.
Cryptography is vital for data security, but cryptographic algorithms can still be vulnerable to side-channel attacks (SCAs), physical assaults exploiting power consumption and EM radiation. SCAs pose a significant threat to cryptographic integrity, compromising device keys. While literature on SCAs focuses on real-world devices, the rise of sophisticated devices necessitates fresh approaches. Electromagnetic side-channel analysis (EM-SCA) gathers information by monitoring EM radiation, capable of retrieving encryption keys and detecting malicious activity. This study evaluates EM-SCA's impact on encryption across scenarios and explores its role in digital forensics and law enforcement. Addressing encryption susceptibility to EM-SCA can empower forensic investigators in overcoming encryption challenges, maintaining their crucial role in law enforcement. Additionally, the paper defines EM-SCA's current state in attacking encryption, highlighting vulnerable and resistant encryption algorithms and devices, and promising EM-SCA approaches. This study offers a comprehensive analysis of EM-SCA in law enforcement and digital forensics, suggesting avenues for further research.
The task of multimedia geolocation is becoming an increasingly essential component of the digital forensics toolkit to effectively combat human trafficking, child sexual exploitation, and other illegal acts. Typically, metadata-based geolocation information is stripped when multimedia content is shared via instant messaging and social media. The intricacy of geolocating, geotagging, or finding geographical clues in this content is often overly burdensome for investigators. Recent research has shown that contemporary advancements in artificial intelligence, specifically computer vision and deep learning, show significant promise towards expediting the multimedia geolocation task. This systematic literature review thoroughly examines the state-of-the-art leveraging computer vision techniques for multimedia geolocation and assesses their potential to expedite human trafficking investigation. This includes a comprehensive overview of the application of computer vision-based approaches to multimedia geolocation, identifies their applicability in combating human trafficking, and highlights the potential implications of enhanced multimedia geolocation for prosecuting human trafficking. 123 articles inform this systematic literature review. The findings suggest numerous potential paths for future impactful research on the subject.
Rapid developments in recent years with the Internet of Things (IoT) have supported significant growth in edge computing. The growing number and diversity of IoT/edge devices increase the risk of security incidents. As many IoT/edge devices can be considered lightweight, with limited data processing capacity and significant heterogeneity, traditional digital forensic investigation techniques may not always work with them. Network forensic readiness on IoT/edge devices is a proactive approach to collecting evidence to assist with forensic examinations. This paper introduces the Network Forensic Readiness for Edge Devices (NetFoREdge) framework, focussing on deploying lightweight AI models in resource-constrained environments for attack detection, evidence collection, and preservation. The proposed lightweight AI-driven solution performed effectively on resource-constrained physical devices, namely a Raspberry Pi 3B and a Raspberry Pi Zero 2 W. To evaluate the effectiveness of this approach, experiments have been conducted using two datasets: the recently released IoT network attack dataset, CICIoT2023, and the IoT-23 dataset. The experimental results are very encouraging - achieving an accuracy rate exceeding 99.60% and 99.98% for multiclassification on CICIoT2023 and IoT-23 datasets, respectively, and demonstrating the feasibility of network forensic readiness on IoT/edge devices with limited memory, storage, CPU usage, and power consumption.
In an era where digital data security is becoming all-pervasive, and data encryption is baked in by default on many consumer-level and commercial-level devices, the encryption of Internet of Things (IoT) devices presents a significant obstacle for lawful digital forensic investigation. Towards addressing this issue, this paper introduces a novel digital forensic methodology that leverages electromagnetic side-channel analysis (EM-SCA) for the non-invasive recovery of encryption keys from black-box IoT devices, i.e., where little/nothing is known about the device's encryption in advance. By reducing the key space necessary for brute-force decryption and employing machine-learning techniques, the proposed approach enhances the digital forensic process - helping to mitigate investigative roadblocks and case backlogs. This automated, adaptable system not only preserves the integrity of forensic evidence, but also ensures wide applicability within the evolving IoT landscape. This practical methodology could prove invaluable for investigators facing the complexities of encrypted device analysis encountered during their cases.
Password-based authentication systems have many weaknesses, yet they remain overwhelmingly used and their announced disappearance is still undated. The system admin overcomes the imperfection by skilfully enforcing a strong password policy and sane password management on the server side. But in the end, the user behind the password is still responsible for the password’s strength. A poor choice can have dramatic consequences for the user or even for the service behind, especially considering critical infrastructure. On the other hand, law enforcement can benefit from a suspect’s weak decisions to recover digital content stored in an encrypted format. Generic password cracking procedures can support law enforcement in this matter — however, these approaches quickly demonstrate their limitations. This article proves that more targeted approaches can be used in combination with traditional strategies to increase the likelihood of success when contextual information is available and can be exploited.
Conducting a systematic literature review and comprehensive analysis, this paper surveys all 135 peer-reviewed articles published at the Digital Forensics Research Conference Europe (DFRWS EU) spanning the decade since its inaugural running (2014-2023). This comprehensive study of DFRWS EU articles encompasses sub-disciplines such as digital forensic science, device forensics, techniques and fundamentals, artefact forensics, multimedia forensics, memory forensics, and network forensics. Quantitative analysis of the articles' co-authorships, geographical spread and citation metrics are outlined. The analysis presented offers insights into the evolution of digital forensic research efforts over these ten years and informs some identified future research directions.
With the rise of online criminal activity leading to the increasing importance of digital forensics, efficient and effective password-cracking tools are necessary to collect evidence in a timely manner, leading to solved crimes. Recent advances in machine learning and artificial intelligence have led to the development of context-based and large language model approaches, significantly improving the accuracy and efficiency of password cracking. This work focusses on these more modern techniques, specifically creating context-based contextual password dictionaries through training a series of PassGPTs, a large language model capable of creating password candidates from leaked password dictionary lists. This paper explores possible improvements in password cracking techniques to help law enforcement agencies in digital forensic investigations by combining PassGPT with a contextual approach.
The advancement of cryptographic systems presents both opportunities and challenges in the realm of digital forensics. In an era where the security of digital information is crucial, the ability to non-invasively detect and analyze cryptographic configurations has become significant. As cryptographic algorithms become more robust with longer key lengths, they provide higher levels of security. However, non-invasive side channels, specifically through electromagnetic (EM) emanations, can expose confidential cryptographic details, thus presenting a novel solution to the pressing forensic challenge. This research delves into the capabilities of EM side-channel analysis (EM-SCA), specifically focusing on detecting both cryptographic key lengths and the algorithms employed utilizing a machine-learning-based approach, which can be instrumental for digital forensic experts during their investigations. Through meticulous data processing and analysis, the Support Vector Machine (SVM) model, among others, demonstrated a notable accuracy of 94.55% in distinguishing between AES and ECC cryptographic operations. This capability significantly enhances digital forensic methodologies, offering a novel avenue for noninvasively uncovering encrypted data’s cryptographic settings. By identifying key lengths and algorithms without invasive procedures, this research contributes substantially to the advancement of forensic investigations in encrypted environments.
This paper reports on the largest survey of digital forensic practitioners to date (DFPulse) conducted from March to May 2024 resulting in 122 responses. The survey collected information about practitioners' operating environments, the technologies they encounter, investigative techniques they use, the challenges they face, the degree to which academic research is accessed and useful to the practitioner community, and their suggested future research directions. The paper includes quantitative and qualitative results from the survey and a discussion of the implications for academia, the improvements that can be made, and future research directions.
Zeno Geradts合作论文数Netherlands Forensic Institute2