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Face presentation attack detection (PAD) has become a thorny problem for biometric systems and numerous countermeasures have been proposed to address it. However, majority of them directly extract feature descriptors and distinguish fake…

Computer Vision and Pattern Recognition · Computer Science 2018-11-13 Lei Li , Zhaoqiang Xia , Xiaoyue Jiang , Fabio Roli , Xiaoyi Feng

Program obfuscation is a widely employed approach for software intellectual property protection. However, general obfuscation methods (e.g., lexical obfuscation, control obfuscation) implemented in mainstream obfuscation tools are heuristic…

Cryptography and Security · Computer Science 2017-10-04 Hui Xu , Yangfan Zhou , Yu Kang , Michael R. Lyu

Recent researches show that deep learning model is susceptible to backdoor attacks. Many defenses against backdoor attacks have been proposed. However, existing defense works require high computational overhead or backdoor attack…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Mingfu Xue , Yinghao Wu , Zhiyu Wu , Yushu Zhang , Jian Wang , Weiqiang Liu

Analyzing large sets of visual media remains a challenging task, particularly in mixed-method studies dealing with problematic information and human subjects. Using AI tools in such analyses risks reifying and exacerbating biases, as well…

Computers and Society · Computer Science 2024-08-08 Nina Lutz , Jordyn W. Padzensky , Joseph S. Schafer

The major threat in cyber crime for digital forensic examiner is to identify, analyze and interpret the concealed information inside digital medium such as image, audio and video. There are strong indications that hiding information inside…

Cryptography and Security · Computer Science 2012-06-14 P. Thiyagarajan , G. Aghila , V. Prasanna Venkatesan

Image scaling is an integral part of machine learning and computer vision systems. Unfortunately, this preprocessing step is vulnerable to so-called image-scaling attacks where an attacker makes unnoticeable changes to an image so that it…

Cryptography and Security · Computer Science 2024-02-05 Erwin Quiring , Andreas Müller , Konrad Rieck

Backdoors and poisoning attacks are a major threat to the security of machine-learning and vision systems. Often, however, these attacks leave visible artifacts in the images that can be visually detected and weaken the efficacy of the…

Cryptography and Security · Computer Science 2020-03-20 Erwin Quiring , Konrad Rieck

The widespread adoption of deep learning across various industries has introduced substantial challenges, particularly in terms of model explainability and security. The inherent complexity of deep learning models, while contributing to…

Cryptography and Security · Computer Science 2025-01-08 Kealan Dunnett , Reza Arablouei , Dimity Miller , Volkan Dedeoglu , Raja Jurdak

One of the data security and privacy concerns is of insider threats, where legitimate users of the system abuse the access privileges they hold. The insider threat to data security means that an insider steals or leaks sensitive personal…

Cryptography and Security · Computer Science 2020-11-05 Muhammad Imran Khan , Simon N. Foley , Barry O'Sullivan

With the increasing use of neural networks in critical systems, runtime monitoring becomes essential to reject unsafe predictions during inference. Various techniques have emerged to establish rejection scores that maximize the separability…

Machine Learning · Computer Science 2024-05-22 Khoi Tran Dang , Kevin Delmas , Jérémie Guiochet , Joris Guérin

In intrusion detection systems, classifiers still suffer from several drawbacks such as data dimensionality and dominance, different network feature types, and data impact on the classification. In this paper two significant enhancements…

Cryptography and Security · Computer Science 2012-12-12 Maher Salem , Ulrich Buehler

Nowadays, we are increasingly logging on many different Internet sites to access private data like emails or photos remotely stored in the clouds. This makes us all the more concerned with digital identity theft and passwords being stolen…

Human-Computer Interaction · Computer Science 2013-04-25 Frank Nielsen

Nearly 70% of information security threats originate from inside an organization. Opportunities for insider threats have been increasing at an alarming rate with the latest trends of mobility (portable devices like Laptop, smart phones…

Cryptography and Security · Computer Science 2010-10-14 Sugata Sanyal , Ajit Shelat , Amit Gupta

This is Btech thesis report on detection and purification of adverserially attacked images. A deep learning model is trained on certain training examples for various tasks such as classification, regression etc. By training, weights are…

Machine Learning · Computer Science 2022-05-18 Dvij Kalaria

In the field of computer vision, the persistent presence of color bias, resulting from fluctuations in real-world lighting and camera conditions, presents a substantial challenge to the robustness of models. This issue is particularly…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Yunpeng Gong , Jiaquan Li , Lifei Chen , Min Jiang

Insider threat is one of the most pernicious threat vectors to information and communication technologies (ICT)across the world due to the elevated level of trust and access that an insider is afforded. This type of threat can stem from…

Cryptography and Security · Computer Science 2021-02-11 Nidhi Rastogi , Qicheng Ma

This paper considers a method of coding the sensor outputs in order to detect stealthy false data injection attacks. An intelligent attacker can design a sequence of data injection to sensors and actuators that pass the state estimator and…

Cryptography and Security · Computer Science 2016-11-17 Fei Miao , Quanyan Zhu , Miroslav Pajic , George J. Pappas

Conventional security solutions are insufficient to address the urgent cybersecurity challenge posed by insider attacks. While a great deal of research has been done in this area, our systematic literature analysis attempts to give readers…

Cryptography and Security · Computer Science 2024-07-25 Krutarth Chauhan

Insider threats have become reality for civilian firms such as Tesla, which experienced sabotage and intellectual property theft, and Capital One, which suffered from fraud. Even greater social impact was caused by the data breach at the US…

Cryptography and Security · Computer Science 2019-11-22 Guerrino Mazzarolo , Anca Delia Jurcut

Attackers have developed ever more sophisticated and intelligent ways to hack information and communication technology systems. The extent of damage an individual hacker can carry out upon infiltrating a system is well understood. A…

Cryptography and Security · Computer Science 2018-08-20 Cosimo Ieracitano , Ahsan Adeel , Mandar Gogate , Kia Dashtipour , Francesco Carlo Morabito , Hadi Larijani , Ali Raza , Amir Hussain