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The rapid detection of attackers within firewalls of enterprise computer net- works is of paramount importance. Anomaly detectors address this problem by quantifying deviations from baseline statistical models of normal network behav- ior…

Cryptography and Security · Computer Science 2016-09-02 Justin Grana , David Wolpert , Joshua Neil , Dongping Xie , Tanmoy Bhattacharya , Russel Bent

With the rapid growth of malware attacks, more antivirus developers consider deploying machine learning technologies into their productions. Researchers and developers published various machine learning-based detectors with high precision…

Cryptography and Security · Computer Science 2021-12-07 Matthew Crawford , Wei Wang , Ruoxi Sun , Minhui Xue

Anomaly detection has many applications ranging from bank-fraud detection and cyber-threat detection to equipment maintenance and health monitoring. However, choosing a suitable algorithm for a given application remains a challenging design…

Detection of unknown malware with high accuracy is always a challenging task. Therefore, in this paper, we study the classification of unknown malware by two methods. In the first/regular method, similar to other authors [17][16][20]…

Cryptography and Security · Computer Science 2018-09-18 Ashu Sharma , Sanjay K. Sahay , Abhishek Kumar

Most of today's security solutions, such as security information and event management (SIEM) and signature based IDS, require the operator to evaluate potential attack vectors and update detection signatures and rules in a timely manner.…

Cryptography and Security · Computer Science 2021-01-19 Markus Wurzenberger , Florian Skopik , Roman Fiedler , Wolfgang Kastner

With the rapid technological advancement, security has become a major issue due to the increase in malware activity that poses a serious threat to the security and safety of both computer systems and stakeholders. To maintain stakeholders,…

In today's digital world most of the anti-malware tools are signature based which is ineffective to detect advanced unknown malware viz. metamorphic malware. In this paper, we study the frequency of opcode occurrence to detect unknown…

Cryptography and Security · Computer Science 2019-03-08 Sanjay Sharma , C. Rama Krishna , Sanjay K. Sahay

In recent years the PC has been replaced by mobile devices for many security sensitive operations, both from a privacy and a financial standpoint. While security mechanisms are deployed at various levels, these are frequently put under…

Cryptography and Security · Computer Science 2021-02-26 Mark Vella , Christian Colombo

Timely and accurate detection of anomalies in power electronics is becoming increasingly critical for maintaining complex production systems. Robust and explainable strategies help decrease system downtime and preempt or mitigate…

With the increasingly rapid development of new malicious computer software by bad faith actors, both commercial and research-oriented antivirus detectors have come to make greater use of machine learning tactics to identify such malware as…

Cryptography and Security · Computer Science 2021-12-07 Hamish Spencer , Wei Wang , Ruoxi Sun , Minhui Xue

The web is experiencing an explosive growth in the last years. New technologies are introduced at a very fast-pace with the aim of narrowing the gap between web-based applications and traditional desktop applications. The results are web…

Cryptography and Security · Computer Science 2015-07-14 Alfredo De Santis , Giancarlo De Maio , Umberto Ferraro Petrillo

Various approaches in the field of physical layer security involve anomaly detection, such as physical layer authentication, sensing attacks, and anti-tampering solutions. Depending on the context in which these approaches are applied,…

Information Theory · Computer Science 2025-06-13 Stefan Roth , Aydin Sezgin

The increasing sophistication of encryption-based ransomware has demanded innovative approaches to detection and mitigation, prompting the development of a hierarchical framework grounded in probabilistic cryptographic analysis. By focusing…

Cryptography and Security · Computer Science 2025-08-11 Kevin Pekepok , Persephone Kirkwood , Esme Christopolous , Florence Braithwaite , Oliver Nightingale

Anomaly detection is the process of identifying abnormal instances or events in data sets which deviate from the norm significantly. In this study, we propose a signatures based machine learning algorithm to detect rare or unexpected items…

Computational Finance · Quantitative Finance 2022-02-09 Erdinc Akyildirim , Matteo Gambara , Josef Teichmann , Syang Zhou

In the past decade, the cyber-crime related to mobile devices has increased. Mobile devices, especially the ones running on Android operating system are particularly interesting to malware creators, as the users often keep the biggest…

Cryptography and Security · Computer Science 2019-10-24 Nikola Milosevic , Junfan Huang

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

Botnets (networks of compromised computers) are often used for malicious activities such as spam, click fraud, identity theft, phishing, and distributed denial of service (DDoS) attacks. Most of previous researches have introduced fully or…

Cryptography and Security · Computer Science 2018-11-05 Sajjad Arshad , Maghsoud Abbaspour , Mehdi Kharrazi , Hooman Sanatkar

With increasingly sophisticated cyber-adversaries able to access a wider repertoire of mechanisms to implant malware such as ransomware, CPU/GPU keyloggers, and stealthy kernel rootkits, there is an urgent need for techniques to detect and…

Cryptography and Security · Computer Science 2025-01-23 Farshad Khorrami , Ramesh Karri , Prashanth Krishnamurthy

Our computer systems for decades have been threatened by various types of hardware and software attacks of which Malwares have been one of them. This malware has the ability to steal, destroy, contaminate, gain unintended access, or even…

Cryptography and Security · Computer Science 2021-04-15 Abhijitt Dhavlle , Sanket Shukla

Modern computer threats are far more complicated than those seen in the past. They are constantly evolving, altering their appearance, perpetually changing disguise. Under such circumstances, detecting known threats, a fortiori zero-day…

Cryptography and Security · Computer Science 2015-08-18 Shachar Siboni , Asaf Cohen