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Android Malware has emerged as a consequence of the increasing popularity of smartphones and tablets. While most previous work focuses on inherent characteristics of Android apps to detect malware, this study analyses indirect features and…

Cryptography and Security · Computer Science 2017-12-13 Ignacio Martín , José Alberto Hernández , Alfonso Muñoz , Antonio Guzmán

The performance of a machine learning-based malware classifier depends on the large and updated training set used to induce its model. In order to maintain an up-to-date training set, there is a need to continuously collect benign and…

Cryptography and Security · Computer Science 2020-11-02 Tzvika Shapira , David Berend , Ishai Rosenberg , Yang Liu , Asaf Shabtai , Yuval Elovici

Class imbalance poses a significant challenge to supervised classification, particularly in critical domains like medical diagnostics and anomaly detection where minority class instances are rare. While numerous studies have explored…

Machine Learning · Computer Science 2025-09-10 Ali Nawaz , Amir Ahmad , Shehroz S. Khan

Highly imbalanced datasets are ubiquitous in medical image classification problems. In such problems, it is often the case that rare classes associated to less prevalent diseases are severely under-represented in labeled databases,…

Computer Vision and Pattern Recognition · Computer Science 2022-09-15 Adrian Galdran , Gustavo Carneiro , Miguel A. González Ballester

The growth in the number of Android and Internet of Things (IoT) devices has witnessed a parallel increase in the number of malicious software (malware), calling for new analysis approaches. We represent binaries using their graph…

Cryptography and Security · Computer Science 2019-02-12 Hisham Alasmary , Aminollah Khormali , Afsah Anwar , Jeman Park , Jinchun Choi , DaeHun Nyang , Aziz Mohaisen

Network and system security are incredibly critical issues now. Due to the rapid proliferation of malware, traditional analysis methods struggle with enormous samples. In this paper, we propose four easy-to-extract and small-scale features,…

Cryptography and Security · Computer Science 2022-01-20 Zhenshuo Chen , Eoin Brophy , Tomas Ward

The rapidly evolving Android malware ecosystem demands high-quality, real-time datasets as a foundation for effective detection and defense. With the widespread adoption of mobile devices across industrial systems, they have become a…

Cryptography and Security · Computer Science 2025-10-21 Hongpeng Bai , Minhong Dong , Yao Zhang , Shunzhe Zhao , Haobo Zhang , Lingyue Li , Yude Bai , Guangquan Xu

Learning from imbalanced data is a challenging task. Standard classification algorithms tend to perform poorly when trained on imbalanced data. Some special strategies need to be adopted, either by modifying the data distribution or by…

Machine Learning · Computer Science 2022-08-26 Asif Newaz , Shahriar Hassan , Farhan Shahriyar Haq

The growing popularity of Android requires malware detection systems that can keep up with the pace of new software being released. According to a recent study, a new piece of malware appears online every 12 seconds. To address this, we…

Cryptography and Security · Computer Science 2025-11-14 Ali Muzaffar , Hani Ragab Hassen , Hind Zantout , Michael A Lones

As collaborative learning allows joint training of a model using multiple sources of data, the security problem has been a central concern. Malicious users can upload poisoned data to prevent the model's convergence or inject hidden…

Cryptography and Security · Computer Science 2021-01-21 Ximing Qiao , Yuhua Bai , Siping Hu , Ang Li , Yiran Chen , Hai Li

There is an increase in global malware threats. To address this, an encryption-type ransomware has been introduced on the Android operating system. The challenges associated with malicious threats in phone use have become a pressing issue…

Cryptography and Security · Computer Science 2025-10-30 Parick Ozoh , John K Omoniyi , Bukola Ibitoye

Class-imbalance is a common problem in machine learning practice. Typical Imbalanced Learning (IL) methods balance the data via intuitive class-wise resampling or reweighting. However, previous studies suggest that beyond class-imbalance,…

Machine Learning · Computer Science 2022-11-24 Zhining Liu , Pengfei Wei , Zhepei Wei , Boyang Yu , Jing Jiang , Wei Cao , Jiang Bian , Yi Chang

One of the most significant current discussions in the field of data mining is classifying imbalanced data. In recent years, several ways are proposed such as algorithm level (internal) approaches, data level (external) techniques, and…

Machine Learning · Computer Science 2021-06-03 Maliheh Roknizadeh , Hossein Monshizadeh Naeen

In a context of malicious software detection, machine learning (ML) is widely used to generalize to new malware. However, it has been demonstrated that ML models can be fooled or may have generalization problems on malware that has never…

Cryptography and Security · Computer Science 2023-06-08 Grégoire Barrué , Tony Quertier

As computing systems become increasingly advanced and as users increasingly engage themselves in technology, security has never been a greater concern. In malware detection, static analysis, the method of analyzing potentially malicious…

Cryptography and Security · Computer Science 2018-05-22 Chan Woo Kim

Deep learning-based malware detectors have been shown to be susceptible to adversarial malware examples, i.e. malware examples that have been deliberately manipulated in order to avoid detection. In light of the vulnerability of deep…

Cryptography and Security · Computer Science 2024-04-30 Daniel Gibert , Giulio Zizzo , Quan Le , Jordi Planes

With the popularity of Android growing exponentially, the amount of malware has significantly exploded. It is arguably one of the most viral problems on mobile platforms. Recently, various approaches have been introduced to detect Android…

Cryptography and Security · Computer Science 2022-01-25 Peng Xu

The diagnosed cases of Breast cancer is increasing annually and unfortunately getting converted into a high mortality rate. Cancer, at the early stages, is hard to detect because the malicious cells show similar properties (density) as…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Deepti Ameta

The rapid rise of cyber-crime activities and the growing number of devices threatened by them place software security issues in the spotlight. As around 90% of all attacks exploit known types of security issues, finding vulnerable…

Cryptography and Security · Computer Science 2024-05-14 Rudolf Ferenc , Péter Hegedűs , Péter Gyimesi , Gábor Antal , Dénes Bán , Tibor Gyimóthy

Automatic skin lesion classification from dermoscopy images is important for the early diagnosis of skin diseases such as melanoma. Class imbalance in skin lesion datasets, notably the defects in the representation of malignant(cancerous)…

Quantitative Methods · Quantitative Biology 2025-12-19 Ariful Islam Khandaker , Abdullah Al Shafi , Mohiuddin Ahmad
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