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Malicious software is abundant in a world of innumerable computer users, who are constantly faced with these threats from various sources like the internet, local networks and portable drives. Malware is potentially low to high risk and can…

Cryptography and Security · Computer Science 2012-05-15 Priyank Singhal , Nataasha Raul

Ransomware, a type of malicious software that encrypts a victim's files and only releases the cryptographic key once a ransom is paid, has emerged as a potentially devastating class of cybercrimes in the past few years. In this paper, we…

Cryptography and Security · Computer Science 2018-03-06 Florian Quinkert , Thorsten Holz , KSM Tozammel Hossain , Emilio Ferrara , Kristina Lerman

Decentralized systems, such as distributed ledgers and the InterPlanetary File System (IPFS), are designed to offer more open and robust services. However, they also create opportunities for illegal activities. We demonstrate how these…

Cryptography and Security · Computer Science 2020-03-11 Christos Karapapas , Iakovos Pittaras , Nikos Fotiou , George C. Polyzos

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

Honey Encryption is an approach to encrypt the messages using low min-entropy keys, such as weak passwords, OTPs, PINs, credit card numbers. The ciphertext is produces, when decrypted with any number of incorrect keys, produces…

Cryptography and Security · Computer Science 2020-11-02 Kunjal Panchal

Cybersecurity solutions have shown promising performance when detecting ransomware samples that use fixed algorithms and encryption rates. However, due to the current explosion of Artificial Intelligence (AI), sooner than later, ransomware…

Honeyfiles are security assets designed to attract and detect intruders on compromised systems. Honeyfiles are a type of honeypot that mimic real, sensitive documents, creating the illusion of the presence of valuable data. Interaction with…

Machine Learning · Computer Science 2024-04-09 David D. Nguyen , David Liebowitz , Surya Nepal , Salil S. Kanhere , Sharif Abuadbba

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

The current pandemic situation has increased cyber-attacks drastically worldwide. The attackers are using malware like trojans, spyware, rootkits, worms, ransomware heavily. Ransomware is the most notorious malware, yet we did not have any…

Cryptography and Security · Computer Science 2022-06-07 Nanda Rani , Sunita Vikrant Dhavale

The threat from ransomware continues to grow both in the number of affected victims as well as the cost incurred by the people and organisations impacted in a successful attack. In the majority of cases, once a victim has been attacked…

Cryptography and Security · Computer Science 2021-06-29 Simon R Davies , Richard Macfarlane , William J Buchanan

Honeyfiles are a particularly useful type of honeypot: fake files deployed to detect and infer information from malicious behaviour. This paper considers the challenge of naming honeyfiles so they are camouflaged when placed amongst real…

Cryptography and Security · Computer Science 2024-05-13 Roelien C. Timmer , David Liebowitz , Surya Nepal , Salil S. Kanhere

Currently, different forms of ransomware are increasingly threatening Internet users. Modern ransomware encrypts important user data and it is only possible to recover it once a ransom has been paid. In this paper we show how…

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

Linux-based cloud environments have become lucrative targets for ransomware attacks, employing various encryption schemes at unprecedented speeds. Addressing the urgency for real-time ransomware protection, we propose leveraging the…

Cryptography and Security · Computer Science 2024-09-11 Adrian Brodzik , Tomasz Malec-Kruszyński , Wojciech Niewolski , Mikołaj Tkaczyk , Krzysztof Bocianiak , Sok-Yen Loui

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

Encryption-based cyber threats continue to evolve, employing increasingly sophisticated techniques to bypass traditional detection mechanisms. Many existing classification strategies depend on static rule sets, signature-based matching, or…

Nowadays, malware increasingly uses DNS-based covert channels in order to evade detection and maintain stealthy communication with its command-and-control servers. While prior work has focused on detecting such activity, identifying…

Cryptography and Security · Computer Science 2025-11-26 Pascal Ruffing , Denis Petrov , Sebastian Zillien , Steffen Wendzel

Encryption-based attacks have introduced significant challenges for detection mechanisms that rely on predefined signatures, heuristic indicators, or static rule-based classifications. Probabilistic Latent Encryption Mapping presents an…

Cryptography and Security · Computer Science 2025-03-26 Mohammad Eisa , Quentin Yardley , Rafael Witherspoon , Harriet Pendlebury , Clement Rutherford

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

Detection and analysis of a potential malware specifically, used for ransom is a challenging task. Recently, intruders are utilizing advanced cryptographic techniques to get hold of digital assets and then demand a ransom. It is believed…

Cryptography and Security · Computer Science 2020-06-08 Arslan Ashraf , Abdul Aziz , Umme Zahoora , Muttukrishnan Rajarajan , Asifullah Khan

The ransomware threat has loomed over our digital life since 1989. Criminals use this type of cyber attack to lock or encrypt victims' data, often coercing them to pay exorbitant amounts in ransom. The damage ransomware causes ranges from…

Cryptography and Security · Computer Science 2023-06-22 Kenan Begovic , Abdulaziz Al-Ali , Qutaibah Malluhi