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Memory was captured from a system infected by ransomware and its contents was examined using live forensic tools, with the intent of identifying the symmetric encryption keys being used. NotPetya, Bad Rabbit and Phobos hybrid ransomware…

Cryptography and Security · Computer Science 2020-12-22 Simon R. Davies , Richard Macfarlane , William J. Buchanan

Several cybersecurity domains, such as ransomware detection, forensics and data analysis, require methods to reliably identify encrypted data fragments. Typically, current approaches employ statistics derived from byte-level distribution,…

Cryptography and Security · Computer Science 2021-04-01 Fabio De Gaspari , Dorjan Hitaj , Giulio Pagnotta , Lorenzo De Carli , Luigi V. Mancini

Researchers have proposed a wide range of ransomware detection and analysis schemes. However, most of these efforts have focused on older families targeting Windows 7/8 systems. Hence there is a critical need to develop efficient solutions…

Cryptography and Security · Computer Science 2023-06-27 Aldin Vehabovic , Hadi Zanddizari , Nasir Ghani , Farooq Shaikh , Elias Bou-Harb , Morteza Safaei Pour , Jorge Crichigno

This research recasts ransomware detection using performance monitoring and statistical machine learning. The work builds a test environment with 41 input variables to label and compares three computing states: idle, encryption and…

Cryptography and Security · Computer Science 2021-09-28 David Noever , Samantha Miller Noever

This paper presents a novel, closed-form, and data/computation efficient online anomaly detection algorithm for time-series data. The proposed method, dubbed RPE, is a window-based method and in sharp contrast to the existing window-based…

Machine Learning · Statistics 2022-06-01 Mostafa Rahmani , Anoop Deoras , Laurent Callot

Ransomware has become a significant global threat with the ransomware-as-a-service model enabling easy availability and deployment, and the potential for high revenues creating a viable criminal business model. Individuals, private…

Cryptography and Security · Computer Science 2018-07-30 Omar M. K. Alhawi , James Baldwin , Ali Dehghantanha

Cloud computing is emerging as a revolutionary computing paradigm, while security and privacy become major concerns in the cloud scenario. For which Searchable Encryption (SE) technology is proposed to support efficient retrieval of…

Information Retrieval · Computer Science 2017-06-01 Ruihui Zhao , Yuanliang Sun , Mizuho Iwaihara

The rapid advancements in artificial intelligence have significantly accelerated the adoption of speech recognition technology, leading to its widespread integration across various applications. However, this surge in usage also highlights…

Sound · Computer Science 2026-01-06 Jiajie Zhu , Xia Du , Xiaoyuan Liu , Jizhe Zhou , Qizhen Xu , Zheng Lin , Chi-Man Pun

State-of-the-art deep learning models for tabular data have recently achieved acceptable performance to be deployed in industrial settings. However, the robustness of these models remains scarcely explored. Contrary to computer vision,…

Machine Learning · Computer Science 2023-11-09 Thibault Simonetto , Salah Ghamizi , Antoine Desjardins , Maxime Cordy , Yves Le Traon

Polymorphic malware continually alters its structure to evade signature-based defences, challenging both commercial antivirus (AV) and enterprise detection systems. This study introduces a reproducible framework for analysing eight…

Cryptography and Security · Computer Science 2025-12-01 Shreyansh Swami , Ishwardeep Singh , Ujjwalpreet Singh , Chinmay Prawah Pant

In the field of digital security, Reversible Adversarial Examples (RAE) combine adversarial attacks with reversible data hiding techniques to effectively protect sensitive data and prevent unauthorized analysis by malicious Deep Neural…

Cryptography and Security · Computer Science 2025-05-13 Xia Du , Jiajie Zhu , Jizhe Zhou , Chi-man Pun , Zheng Lin , Cong Wu , Zhe Chen , Jun Luo

Great concern has arisen in the field of reversible data hiding in encrypted images (RDHEI) due to the development of cloud storage and privacy protection. RDHEI is an effective technology that can embed additional data after image…

Multimedia · Computer Science 2021-10-19 Zhaoxia Yin , Xiaomeng She , Jin Tang , Bin Luo

Cyber security threats have been growing significantly in both volume and sophistication over the past decade. This poses great challenges to malware detection without considerable automation. In this paper, we have proposed a novel…

Cryptography and Security · Computer Science 2019-02-12 Jason Zhang

Increasingly, malwares are becoming complex and they are spreading on networks targeting different infrastructures and personal-end devices to collect, modify, and destroy victim information. Malware behaviors are polymorphic, metamorphic,…

Cryptography and Security · Computer Science 2022-11-09 Lionel Nganyewou Tidjon , Foutse Khomh

Advanced persistent threats (APTs) are sophisticated cyber attacks that can remain undetected for extended periods, making their mitigation particularly challenging. Given their persistence, significant effort is required to detect them and…

Cryptography and Security · Computer Science 2025-02-05 Parth Atulbhai Gandhi , Prasanna N. Wudali , Yonatan Amaru , Yuval Elovici , Asaf Shabtai

Reliable identification of encrypted file fragments is a requirement for several security applications, including ransomware detection, digital forensics, and traffic analysis. A popular approach consists of estimating high entropy as a…

Cryptography and Security · Computer Science 2020-10-16 Fabio De Gaspari , Dorjan Hitaj , Giulio Pagnotta , Lorenzo De Carli , Luigi V. Mancini

Ransomware, a fearsome and rapidly evolving cybersecurity threat, continues to inflict severe consequences on individuals and organizations worldwide. Traditional detection methods, reliant on static signatures and application behavioral…

Cryptography and Security · Computer Science 2024-06-13 Dionysios Diamantopoulos , Roman Pletka , Slavisa Sarafijanovic , A. L. Narasimha Reddy , Haris Pozidis

Ransomware has been an ongoing issue since the early 1990s. In recent times ransomware has spread from traditional computational resources to cyber-physical systems and industrial controls. We devised a series of experiments in which…

Cryptography and Security · Computer Science 2022-01-13 Anthony Melaragno , William Casey

Machine learning based malware detection techniques rely on grayscale images of malware and tends to classify malware based on the distribution of textures in graycale images. Albeit the advancement and promising results shown by machine…

Cryptography and Security · Computer Science 2022-08-05 Sanket Shukla

Federated Unlearning (FU) has emerged as a promising solution to respond to the right to be forgotten of clients, by allowing clients to erase their data from global models without compromising model performance. Unfortunately, researchers…

Cryptography and Security · Computer Science 2025-08-12 Wei Wang , Xiangyun Tang , Yajie Wang , Yijing Lin , Tao Zhang , Meng Shen , Dusit Niyato , Liehuang Zhu