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Recently, Li et al. analyzed Lee et al.'s multi-server authentication scheme and proposed a novel smart card and dynamic ID based remote user authentication scheme for multi-server environments. They claimed that their scheme can resist…

Cryptography and Security · Computer Science 2013-05-29 Dawei Zhao , Haipeng Peng , Shudong Li , Yixian Yang

Attribute-Based Access Control (ABAC) enables highly expressive and flexible access decisions by considering a wide range of contextual attributes. ABAC policies use logical expressions that combine these attributes, allowing for precise…

Cryptography and Security · Computer Science 2025-05-06 Thang Bui , Elliot Shabram , Anthony Matricia

This work reports that the Systematic Literature Review process is responsible for providing theoretical support to research in the Threat Model and Multi-Factor Authentication. However, different from the related works, this study aims to…

Cryptography and Security · Computer Science 2022-09-28 Wesley dos Reis Bezerra , Cristiano Antônio de Souza , Carla Merkle Westphall , Carlos Becker Westphall

Attribute-based encryption (ABE) is a promising tool for implementing fine-grained access control.To solve the matters of security in single authority, access policy public, not traceable of malicious user,we proposed a scheme of…

Cryptography and Security · Computer Science 2020-09-11 Wei Zhang , Yi Wu , Zhishuog Zhang , Hu Xiong , Zhiguang Qin

The problems which are important for the effective functioning of an access control policy in a large information system (LIS) are selected. The general concept of a local optimization of a role-based access control (RBAC) model is…

Cryptography and Security · Computer Science 2018-12-27 N. F. Bogachenko

Access control policies are used to restrict access to sensitive records for authorized users only. One approach for specifying policies is using role based access control (RBAC) where authorization is given to roles instead of users. Users…

Cryptography and Security · Computer Science 2015-03-27 Khair Eddin Sabri

In todays scenario, various organizations store their sensitive data in the cloud environment. Multiple problems are present while retrieving and storing vast amounts of data, such as the frequency of data requests (increasing the…

Cryptography and Security · Computer Science 2025-12-30 Partha Paul , Keshav Sinha

A robust authentication and authorization mechanism is imperative in modular system development, where modularity and modular thinking are pivotal. Traditional systems often employ identity modules responsible for authentication and token…

Cryptography and Security · Computer Science 2023-12-14 Reza Rahaeimehr , Marten van Dijk

With rapid advances in computing systems, there is an increasing demand for more effective and efficient access control (AC) approaches. Recently, Attribute Based Access Control (ABAC) approaches have been shown to be promising in…

Machine Learning · Computer Science 2021-05-19 Leila Karimi , Mai Abdelhakim , James Joshi

The traditional two-factor authentication (2FA) methods primarily rely on the user manually entering a code or token during the authentication process. This can be burdensome and time-consuming, particularly for users who must be…

Cryptography and Security · Computer Science 2024-01-15 Ali Abdullah S. AlQahtani , Thamraa Alshayeb , Mahmoud Nabil , Ahmad Patooghy

Business analytics processes are often composed from orchestrated, collaborating services, which are consumed by users from multiple cloud systems (in different security realms), which need to be engaged dynamically at runtime. If…

Cryptography and Security · Computer Science 2019-01-11 Hussain Al-Aqrabi , Richard Hill

Recommendation and collaborative filtering systems are important in modern information and e-commerce applications. As these systems are becoming increasingly popular in the industry, their outputs could affect business decision making,…

Machine Learning · Computer Science 2016-10-07 Bo Li , Yining Wang , Aarti Singh , Yevgeniy Vorobeychik

Authorizing Large Language Model (LLM)-driven agents to dynamically invoke tools and access protected resources introduces significant security risks, and the risks grow dramatically as agents engage in multi-turn conversations and scale…

Artificial Intelligence · Computer Science 2026-05-05 Majed El Helou , Benjamin Ryder , Chiara Troiani , Jean Diaconu , Hervé Muyal , Marcelo Yannuzzi

Deep-learning-based identity management systems, such as face authentication systems, are vulnerable to adversarial attacks. However, existing attacks are typically designed for single-task purposes, which means they are tailored to exploit…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Hanrui Wang , Shuo Wang , Cunjian Chen , Massimo Tistarelli , Zhe Jin

The rise of smart devices in critical domains--including automotive, medical, industrial--demands robust firmware testing. Fuzzing firmware in re-hosted environments is a promising method for automated testing at scale, but remains…

Cryptography and Security · Computer Science 2026-02-10 Guy Farrelly , Michael Chesser , Seyit Camtepe , Damith C. Ranasinghe

While password managers are a vital tool for internet security, they can also create a massive central point of failure, as evidenced by several major recent data breaches. For over 20 years, deterministic password generators (DPGs) have…

Cryptography and Security · Computer Science 2023-06-27 Vivek Nair , Dawn Song

Risk assessment plays a crucial role in ensuring the security and resilience of modern computer systems. Existing methods for conducting risk assessments often suffer from tedious and time-consuming processes, making it challenging to…

Cryptography and Security · Computer Science 2023-07-27 Simon Unger , Ektor Arzoglou , Markus Heinrich , Dirk Scheuermann , Stefan Katzenbeisser

QUIC protocol is primarily designed to optimize web performance and security. However, previous research has pointed out that it is vulnerable to handshake flooding attacks. Attackers can send excessive volume of handshaking requests to…

Cryptography and Security · Computer Science 2024-12-13 Abdollah Jabbari , Y A Joarder , Benjamin Teyssier , Carol Fung

Due to their widespread use in industry, several techniques have been proposed in the literature to fuzz REST APIs. Existing fuzzers for REST APIs have been focusing on detecting crashes (e.g., 500 HTTP server error status code). However,…

Software Engineering · Computer Science 2026-04-02 Omur Sahin , Man Zhang , Andrea Arcuri

Risk-based authentication (RBA) extends authentication mechanisms to make them more robust against account takeover attacks, such as those using stolen passwords. RBA is recommended by NIST and NCSC to strengthen password-based…

Cryptography and Security · Computer Science 2023-01-05 Stephan Wiefling , Jan Tolsdorf , Luigi Lo Iacono
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