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Ransomware constitutes a significant threat to the Android operating system. It can either lock or encrypt the target devices, and victims are forced to pay ransoms to restore their data. Hence, the prompt detection of such attacks has a…

Cryptography and Security · Computer Science 2019-07-03 Michele Scalas , Davide Maiorca , Francesco Mercaldo , Corrado Aaron Visaggio , Fabio Martinelli , Giorgio Giacinto

Among the many types of malicious codes, ransomware poses a major threat. Ransomware encrypts data and demands a ransom in exchange for decryption. As data recovery is impossible if the encryption key is not obtained, some companies suffer…

Cryptography and Security · Computer Science 2022-02-18 Giyoon Kim , Soram Kim , Soojin Kang , Jongsung Kim

Ransomware can prevent a user from accessing a device and its files until a ransom is paid to the attacker, most frequently in Bitcoin. With over 500 known ransomware families, it has become one of the dominant cybercrime threats for law…

Cryptography and Security · Computer Science 2018-04-12 Masarah Paquet-Clouston , Bernhard Haslhofer , Benoit Dupont

Emergence of crypto-ransomware has significantly changed the cyber threat landscape. A crypto ransomware removes data custodian access by encrypting valuable data on victims' computers and requests a ransom payment to reinstantiate…

Cryptography and Security · Computer Science 2018-08-07 Sajad Homayoun , Ali Dehghantanha , Marzieh Ahmadzadeh , Sattar Hashemi , Raouf Khayami

Newly emerging variants of ransomware pose an ever-growing threat to computer systems governing every aspect of modern life through the handling and analysis of big data. While various recent security-based approaches have focused on…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Amir Atapour-Abarghouei , Stephen Bonner , Andrew Stephen McGough

Ransomware attacks continue to wreak havoc across the globe, with public reports of total ransomware payments topping billions of dollars annually. While the use of cryptocurrency presents an avenue to understand the tactics of ransomware…

Cryptography and Security · Computer Science 2024-08-29 Jack Cable , Ian W. Gray , Damon McCoy

Encryption ransomware has become a notorious malware. It encrypts user data on storage devices like solid-state drives (SSDs) and demands a ransom to restore data for users. To bypass existing defenses, ransomware would keep evolving and…

Cryptography and Security · Computer Science 2022-06-14 Benjamin Reidys , Peng Liu , Jian Huang

The rapid evolution of encryption-based threats has rendered conventional detection mechanisms increasingly ineffective against sophisticated attack strategies. Monitoring entropy variations across hierarchical system levels offers an…

Cryptography and Security · Computer Science 2025-08-11 Hayden Srynn , Gilbert Pomeroy , Florence Lytton , Godfrey Ashcombe , Valentine Harcourt , Duncan Pettigrew

Computing is still under a significant threat from ransomware, which necessitates prompt action to prevent it. Ransomware attacks can have a negative impact on how smart grids, particularly digital substations. In addition to examining a…

Cryptography and Security · Computer Science 2024-05-02 Hong-Nhung Nguyen , Ha-Thanh Nguyen , Damien Lescos

The malware and botnet phenomenon is among the most significant threats to cybersecurity today. Consequently, law enforcement agencies, security companies, and researchers are constantly seeking to disrupt these malicious operations through…

Cryptography and Security · Computer Science 2021-07-08 Colin C. Ife , Yun Shen , Steven J. Murdoch , Gianluca Stringhini

Cybercrime is one of the major digital threats of this century. In particular, ransomware attacks have significantly increased, resulting in global damage costs of tens of billion dollars. In this paper, we train and test different Machine…

Cryptography and Security · Computer Science 2022-11-29 Benjamin Marais , Tony Quertier , Stéphane Morucci

Among many prevailing malware, crypto-ransomware poses a significant threat as it financially extorts affected users by creating denial of access via unauthorized encryption of their documents as well as holding their documents hostage and…

Cryptography and Security · Computer Science 2020-11-25 Nitin Pundir , Mark Tehranipoor , Fahim Rahman

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

Nowadays security is major concern for any user connected to the internet. Various types of attacks are to be performed by intruders to obtaining user information as manin-middle attack, denial of service, malware attacks etc. Malware…

Cryptography and Security · Computer Science 2020-01-22 Jaspreet Kaur

Ransomware represents a pervasive threat, traditionally countered at the operating system, file-system, or network levels. However, these approaches often introduce significant overhead and remain susceptible to circumvention by attackers.…

Cryptography and Security · Computer Science 2024-12-31 Nicolas Reategui , Roman Pletka , Dionysios Diamantopoulos

Ransomware has emerged as one of the most concerned cyber risks in recent years, which has caused millions of dollars monetary loss over the world. It typically demands a certain amount of ransom payment within a limited timeframe to…

General Economics · Economics 2020-10-15 Rui Fang , Maochao Xu , Peng Zhao

After the leaking of exploit Eternalblue, some ransomworms utilizing this exploit have been developed to sweep over the world in recent years. Ransomworm is a global growing threat as it blocks users' access to their files unless a ransom…

Cryptography and Security · Computer Science 2022-01-03 Zian Liu

In the rapidly evolving landscape of cybersecurity threats, ransomware represents a significant challenge. Attackers increasingly employ sophisticated encryption methods, such as entropy reduction through Base64 encoding, and partial or…

Cryptography and Security · Computer Science 2025-04-30 Arash Mahboubi , Hamed Aboutorab , Seyit Camtepe , Hang Thanh Bui , Khanh Luong , Keyvan Ansari , Shenlu Wang , Bazara Barry

Ransomware is malicious software that is a prominent global cybersecurity threat. Typically, ransomware encrypts data on a system, rendering the victim unable to decrypt it without the attacker's private key. Subsequently, victims often pay…

Cryptography and Security · Computer Science 2024-02-12 Giyoon Kim , Soojin Kang , Seungjun Baek , Kimoon Kim , Jongsung Kim

As the cost of information processing and Internet accessibility falls, most organizations are becoming increasingly vulnerable to potential cyber threats which its rate has been dramatically increasing every year in recent times. In this…

Cryptography and Security · Computer Science 2011-06-07 Wajeb Gharibi