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Ransomware poses a significant threat to individuals and organisations, compelling tools to investigate its behaviour and the effectiveness of mitigations. To answer this need, we present SAFARI, an open-source framework designed for safe…

Cryptography and Security · Computer Science 2025-04-11 Tommaso Compagnucci , Franco Callegati , Saverio Giallorenzo , Andrea Melis , Simone Melloni , Alessandro Vannini

Crypto-ransomware remains a significant threat to governments and companies alike, with high-profile cyber security incidents regularly making headlines. Many different detection systems have been proposed as solutions to the ever-changing…

Cryptography and Security · Computer Science 2023-05-31 Simon R Davies , Richard Macfarlane , William J Buchanan

This study focuses on the creation and implementation of ransomware for educational purposes that leverages Python's native cryptographic APIs in a controlled environment. Additionally, an Android version of the framework is implemented…

Cryptography and Security · Computer Science 2025-08-19 James Gu , Ahmed Sartaj , Mohammed Akram Taher Khan , Rashid Hussain Khokhar

As Android has become increasingly popular, so has malware targeting it, thus pushing the research community to propose different detection techniques. However, the constant evolution of the Android ecosystem, and of malware itself, makes…

Cryptography and Security · Computer Science 2019-03-05 Lucky Onwuzurike , Enrico Mariconti , Panagiotis Andriotis , Emiliano De Cristofaro , Gordon Ross , Gianluca Stringhini

Ransomware is a malicious class of software that utilises encryption to implement an attack on system availability. The target's data remains encrypted and is held captive by the attacker until a ransom demand is met. A common approach used…

Cryptography and Security · Computer Science 2022-10-25 Simon R Davies , Richard Macfarlane , William J. Buchanan

Smartphones have become an intrinsic part of human's life. The smartphone unifies diverse advanced characteristics. It enables users to store various data such as photos, health data, credential bank data, and personal information. The…

Cryptography and Security · Computer Science 2019-01-23 Abdelmonim Naway , Yuancheng Li

With the recent growth in the number of malicious activities on the internet, cybersecurity research has seen a boost in the past few years. However, as certain variants of malware can provide highly lucrative opportunities for bad actors,…

Cryptography and Security · Computer Science 2019-11-20 Amir Atapour-Abarghouei , Stephen Bonner , Andrew Stephen McGough

With over 50 billion downloads and more than 1.3 million apps in the Google official market, Android has continued to gain popularity amongst smartphone users worldwide. At the same time there has been a rise in malware targeting the…

Cryptography and Security · Computer Science 2016-08-03 Suleiman Y. Yerima , Sakir Sezer , Igor Muttik

Mobile malware has continued to grow at an alarming rate despite on-going efforts towards mitigating the problem. This has been particularly noticeable on Android due to its being an open platform that has subsequently overtaken other…

Cryptography and Security · Computer Science 2016-07-28 Suleiman Y. Yerima , Sakir Sezer , Igor Muttik

Several solutions ensuring the dynamic detection of malicious activities on Android ecosystem have been proposed. These are represented by generic rules and models that identify any purported malicious behavior. However, the approaches…

Cryptography and Security · Computer Science 2023-08-01 Abdellah Ouaguid , Mohamed Ouzzif , Noreddine Abghour

AI methods have been proven to yield impressive performance on Android malware detection. However, most AI-based methods make predictions of suspicious samples in a black-box manner without transparency on models' inference. The expectation…

Cryptography and Security · Computer Science 2022-11-21 Zhi Lu , Vrizlynn L. L. Thing

The continued evolution and diversity of malware constitutes a major threat in modern systems. It is well proven that security defenses currently available are ineffective to mitigate the skills and imagination of cyber-criminals…

Cryptography and Security · Computer Science 2019-04-02 Irina Baptista , Stavros Shiaeles , Nicholas Kolokotronis

With the increasing popularity of Android in the last decade, Android is popular among users as well as attackers. The vast number of android users grabs the attention of attackers on android. Due to the continuous evolution of the variety…

Cryptography and Security · Computer Science 2022-08-15 Shubham Shakya , Mayank Dave

Ransomware defense solutions that can quickly detect and classify different ransomware classes to formulate rapid response plans have been in high demand in recent years. Though the applicability of adopting deep learning techniques to…

Cryptography and Security · Computer Science 2022-04-12 Jinting Zhu , Julian Jang-Jaccard , Amardeep Singh , Ian Welch , Harith AI-Sahaf , Seyit Camtepe

Since Google unveiled Android OS for smartphones, malware are thriving with 3Vs, i.e. volume, velocity, and variety. A recent report indicates that one out of every five business/industry mobile application leaks sensitive personal data.…

Cryptography and Security · Computer Science 2021-03-02 Hemant Rathore , Sanjay K. Sahay , Ritvik Rajvanshi , Mohit Sewak

Cryptography has been extensively used in Android applications to guarantee secure communications, conceal critical data from reverse engineering, or ensure mobile users' privacy. Various system-based and third-party libraries for Android…

Cryptography and Security · Computer Science 2022-07-08 Adam Janovsky , Davide Maiorca , Dominik Macko , Vashek Matyas , Giorgio Giacinto

This study examines machine learning techniques like Decision Trees, Support Vector Machines, Logistic Regression, Neural Networks, and ensemble methods to detect Android malware. The study evaluates these models on a dataset of Android…

Cryptography and Security · Computer Science 2025-11-04 Hasan Abdulla

Ransomware is currently the key threat for individual as well as corporate Internet users. Especially dangerous is crypto ransomware that encrypts important user data and it is only possible to recover it once a ransom has been paid.…

Cryptography and Security · Computer Science 2018-04-10 Krzysztof Cabaj , Marcin Gregorczyk , Wojciech Mazurczyk

Android malware is one of the most dangerous threats on the internet, and it's been on the rise for several years. Despite significant efforts in detecting and classifying android malware from innocuous android applications, there is still…

Cryptography and Security · Computer Science 2021-07-06 Ahmed Hashem El Fiky , Ayman El Shenawy , Mohamed Ashraf Madkour

With the rapid advancement of machine learning (ML), ML-based Android malware detection has gained significant popularity due to its ability to automatically learn malicious patterns from Android apps. However, the lack of an in-depth and…

Cryptography and Security · Computer Science 2026-04-21 Jiahao Liu , Jun Zeng , Fabio Pierazzi , Ziqi Yang , Lorenzo Cavallaro , Zhenkai Liang