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Contemporaneous Update and Enforcement of ABAC Policies 22

Contemporaneous Update and Enforcement of ABAC Policies

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27th acm symposium on access control models and technologies (SacmAT)

作者： Talegaon, Samir Batra, Gunjan Atluri, Vijayalakshmi Sural, Shamik Vaidya, Jaideep Rutgers State Univ Newark NJ 07102 USA Kennesaw State Univ Kennesaw GA 30144 USA IIT Kharagpur Kharagpur W Bengal India

ISBN: (纸本)9781450393577

access control policies are dynamic in nature, and therefore require frequent updates to synchronize with the latest organizational security requirements. As these updates are handled, it is important that all user access requests be answered contemporaneously and correctly without any interruption or delay. In this paper, considering the context of Attribute Based access control (ABAC), we propose an approach that is capable of immediately materializing any update to the policy and ensuring that it is taken into account for any subsequent access requests. One possibility is to update the policy based on the incoming changes through ABAC policy mining techniques. However, it turns out that no existing mining approach can offer correct enforcement of policies when access requests are entertained during the updates. We provide a formal proof for this surprising result and then propose an approach called.. wOP that does not suffer from this problem. Essentially, delta wOP keeps track of the needed information from updates and uses this in conjunction with the existing ABAC policy rules to make access decisions. We present the complexity analysis as well as a comprehensive experimental evaluation to demonstrate the efficacy of the proposed approach for different types of changes.

关键词： access control ABAC Policy Mining Policy Enforcement

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BlueSky: Activity control: A Vision for "Active" Security models for Smart Collaborative Systems 22

BlueSky: Activity Control: A Vision for "Active" Security Mo...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Mawla, Tanjila Gupta, Maanak Sandhu, Ravi Tennessee Technol Univ Dept Comp Sci Cookeville TN 38505 USA Univ Texas San Antonio Inst Cyber Secur ICS San Antonio TX USA Univ Texas San Antonio NSF C SPECC Ctr San Antonio TX USA

ISBN: (纸本)9781450393577

Cyber physical ecosystem connects different intelligent devices over heterogeneous networks. Various operations are performed on smart objects to ensure efficiency and to support automation in smart environments. An Activity (defined by Gupta and Sandhu [17]) reflects the current state of an object, which changes in response to requested operations. Due to multiple running activities on different objects, it is critical to secure collaborative systems considering run-time decisions impacted due to related activities (and other parameters) supporting active enforcement of access control decision. Recently, Gupta and Sandhu [17] proposed Activity-Centric access control (ACAC) and discussed the notion of activity as a prime abstraction for access control in collaborative systems. the model provides an active security approach that considers activity decision factors such as authorizations, obligations, conditions, and dependencies among related device activities. this paper takes a step forward and presents the core components of an ACAC model and compares with other security models differentiating novel properties of ACAC. We highlight how existing models do not (or in limited scope) support 'active' decision and enforcement of authorization in collaborative systems. We propose a hierarchical structure for a family of ACAC models by gradually adding the properties related to notion of activity and discuss states of an activity. We highlight the convergence of ACAC with Zero Trust tenets to reflect how ACAC supports necessary security posture of distributed and connected smart ecosystems. this paper aims to gain a better understanding of ACAC in collaborative systems supporting novel abstractions, properties and requirements.

关键词： Smart Collaborative Systems IoT (Internet of things) Activity-centric access control Active Security Model

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WebSheets: A New Privacy-Centric Framework for Web Applications 23

WebSheets: A New Privacy-Centric Framework for Web Applicati...

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28th acm symposium on access control models and technologies (SacmAT)

作者： Stoller, Scott D. SUNY Stony Brook Stony Brook NY 11794 USA

ISBN: (纸本)9798400701733

Spreadsheets are enormously popular because they enable non-programmers to create applications that manipulate tabular data. the core functionality of many web applications is to display and manipulate tabular data, typically stored in databases. these observations inspired the design of WebSheets, a no-code/low-code web application development framework that provides novel support for security and privacy. the key innovation of WebSheets is that fine-grained, data-driven security policies, as well as application logic, are expressed in the spreadsheet paradigm. this empowers data owners, who are often non-programmers, to directly implement their desired security policies. Each data table in WebSheets is paired with a permission table, which is editable only by the data table's owner. Formulas in a permission table define who can read and write cells in the associated data table. these formulas can easily express role-based, attribute-based and relationship-based access control policies as well as delegation. WebSheets guarantees that these policies are enforced during the entire lifetime of every data item, as it flows through calculations within an application and even when it is passed between applications. While providing global privacy guarantees similar to information flow control systems, WebSheets enables end users to work with the more familiar access control policies. Any user wishing to safeguard their data should store them in tables they own, thereby requiring all web applications to access their data by referencing their tables. this ensures that all applications will respect their access policies in the associated permission tables. By automatically filtering out inaccessible rows and columns, WebSheets presents user-customized views that are the key feature of many web applications. Additional key features of WebSheets include: secure and scalable distributed evaluation techniques that confine WebSheets computations using OS-based access control and

关键词： web application security access control information flow control spreadsheets

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SMART and DIGITAL HEALthCARE. ADVANCED technologies and SECURITY ISSUES 24

SMART and DIGITAL HEALTHCARE. ADVANCED TECHNOLOGIES and SECU...

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10th Central and Eastern European e|Dem and e|Gov Days, CEEE|Gov Days 2024

作者： Alexei, Arina Platon, Nicolae Bolun, Ion Alexei, Anatolie Technical University of Moldova 168 Stefan cel Mare Bd. ChisinauMD-2004 Moldova Academy of Economic Studies of Moldova 61 Banulescu-Bodoni str. ChişinãuMD-2005 Moldova

ISBN: (纸本)9798400717093

Smart and Digital healthcare is governed by ICT (Information and Communication Technology) and uses interconnected devices through communication networks to manage medical data, monitor patient status, manage hospitals and interact with government agencies. Multiple types of network architectures are used to be able to implement Digital Healthcare, some of them use the bottom-up approach, while others use the top-down approach. In Smart Healthcare, in addition to the advanced features of ICT, modern technologies such as IoT and sensors, Big Data and Data Mining, Deep Learning, Cloud Computing, Fog Computing and Edge Computing, Artificial Intelligence and Machine Learning are implemented. However, since the digitization process, the security challenges in Healthcare are also growing exponentially, so critical security threats can cause considerable damage, even threatening the lives of patients. the purpose of the scientific article is to create an overview of e-healthcare and s-healthcare practices and the security challenges they face, as well as to review the security technologies to be implemented, to traditional ones such as: encryption, access control, hashing, redundancy etc.;to advanced security technologies such as blockchain, artificial intelligence, cyber-physical system and quantum cryptography. © 2024 acm.

关键词： Electronic health record

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Game with Breathing control System for Learning Circular Breathing 23

Game with Breathing Control System for Learning Circular Bre...

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10th acm SIGCHI Annual symposium on Computer-Human Interaction in Play, CHI PLAY 2023

作者： Takano, Shiina Niijima, Arinobu Ntt Human Informatics Laboratories Ntt Corporation Kanagawa Yokosuka Japan

ISBN: (纸本)9798400700293

We demonstrate a game with a breathing control system designed to teach circular breathing, an advanced technique used by wind instrument players. Circular breathing allows players to produce continuous sound beyond the duration of a single breath by exhaling through the mouth while simultaneously inhaling through the nose. However, mastering this technique traditionally requires repetitive and often monotonous practice. To address this, we present a novel approach to skill acquisition that leverages gameplay with our breath control system, Fulow. Fulow uniquely controls the user's exhalation involuntarily through facial vibrations, eliminating the need for users to consciously control their exhalation. this innovative feature allows users to effortlessly perform circular breathing. Interaction with Fulow through our designed breathing games is expected to facilitate easy and enjoyable learning of circular breathing, demonstrating the potential of human augmentation technologies as novel game controllers for skill acquisition through gameplay. © 2023 acm.

关键词： Mergers and acquisitions

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BlueSky: Towards Convergence of Zero Trust Principles and Score-Based Authorization for IoT Enabled Smart Systems 22

BlueSky: Towards Convergence of Zero Trust Principles and Sc...

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27th acm symposium on access control models and technologies (SacmAT)

作者： Ameer, Safwa Gupta, Maanak Bhatt, Smriti Sandhu, Ravi Univ Texas San Antonio Inst Cyber Secur San Antonio TX 78249 USA Univ Texas San Antonio NSF C SPECC Ctr Dept Comp Sci San Antonio TX 78249 USA Tennessee Technol Univ Cookeville TN 38505 USA Purdue Univ W Lafayette IN 47907 USA

ISBN: (纸本)9781450393577

Zero trust (ZT) is the term for an evolving set of cybersecurity paradigms that move defenses from static, network-based perimeters to focus on users, assets, and resources. It assumes no implicit trust is granted to assets or user accounts based solely on their physical or network location. We have billions of devices in IoT ecosystems connected to enable smart environments, and these devices are scattered around different locations, sometimes multiple cities or even multiple countries. Moreover, the deployment of resource-constrained devices motivates the integration of IoT and cloud services. this adoption of a plethora of technologies expands the attack surface and positions the IoT ecosystem as a target for many potential security threats. this complexity has outstripped legacy perimeter-based security methods as there is no single, easily identified perimeter for different use cases in IoT. Hence, we believe that the need arises to incorporate ZT guiding principles in workflows, systems design, and operations that can be used to improve the security posture of IoT applications. this paper motivates the need to implement ZT principles when developing access control models for smart IoT systems. It first provides a structured mapping between the ZT basic tenets and the PEI framework when designing and implementing a ZT authorization system. It proposes the ZT authorization requirements framework (ZT-ARF), which provides a structured approach to authorization policy models in ZT systems. Moreover, it analyzes the requirements of access control models in IoT within the proposed ZT-ARF and presents the vision and need for a ZT score-based authorization framework (ZT-SAF) that is capable of maintaining the access control requirements for ZT IoT connected systems.

关键词： IoT Cyber physical systems access control Authorization Zero Trust Score based

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Cutting-edge technologies for Water Resource Management in e-Agriculture solutions 24

Cutting-edge technologies for Water Resource Management in e...

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10th Central and Eastern European e|Dem and e|Gov Days, CEEE|Gov Days 2024

作者： Pahontu, Bogdan Ionut Arsene, Diana Andreea Predescu, Alexandru National School of Political and Administrative Studies SNSPA Bucharest Romania National University of Science and Technology Politehnica Bucharest UNSTPB Bucharest Romania

ISBN: (纸本)9798400717093

the agricultural sector plays a vital role in a country's economy, contributing significantly to the national GDP. With advancements in technology and the advent of the Internet, farmers now have access to a lot of information to enhance agricultural workflows. However, the challenge lies in ensuring the integration of modern technologies across all segments of farming communities, from less developed to more developed areas. this integration process, known as e-Agriculture, relies heavily on Information and Communication Technology (ICT) to ensure efficiency, monitoring, and control in data collection, storage, and transmission through secure and transparent mechanisms. this paper focuses on presenting the existing research done on e-Agriculture, with a particular emphasis on water resource management, decision support systems, blockchain technologies, and gamification solutions. By integrating these technologies, innovative solutions can be developed to efficiently manage water resources in agriculture, thereby enhancing sustainability and productivity. the paper discusses various applications and studies utilizing emerging technologies in e-Agriculture, as well as their potential impact. It also presents an initial approach for an integrated systems utilizing these technologies to offer innovative solutions with immense potential in the context of e-Agriculture. Finally, the paper outlines future research directions, including the development of detailed architectures and proof of concepts for integrated blockchain, serious gaming, and decision support systems in water management and e-Agriculture ecosystems. © 2024 acm.

关键词： Resource allocation

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Cloud Security Frameworks A Comparison to Evaluate Cloud control Standards 16

Cloud Security Frameworks A Comparison to Evaluate Cloud Con...

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16th IEEE/acm International Conference on Utility and Cloud Computing (UCC) / 10th IEEE/acm International Conference on Big Data Computing, Applications and technologies (BDCAT)

作者： Hegde, Taarika Gangl, Josh Babenko, Stanislav Coffman, Joel Johns Hopkins Univ Baltimore MD 21218 USA US Air Force Acad Dept Comp & Cyber Sci Colorado Springs CO 80840 USA

ISBN: (纸本)9798400702341

the expansion of cloud computing applications and services has introduced a number of control and audit frameworks designed to provide a standard around data access, cloud security, and digital enablement. While certification frameworks and security standards have become the de facto industry guidance for IT governance, there is a notable absence of a fundamental rating and review system for the frameworks themselves. this research evaluates cloud provider security standards set forth by ISO/IEC 27001 and 27002, FedRAMP, and SOC 2 against a third-party benchmark, the Cloud controls Matrix (CCM) created by the Cloud Security Alliance (CSA), as well as the CSA's "Treacherous Twelve" of the top threats to cloud computing security. Recent revisions of ISO/IEC-27001 and 27002 and FedRAMP significantly improve their coverage of CCM controls;SOC 2 provides less coverage overall but remains a viable alternative to the aforementioned certifications.

关键词： ISO/IEC 27001 and 27002 FedRAMP SOC 2 CSA CCM certification standard framework cloud computing security privacy

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Proceedings of acm symposium on access control models and technologies, SacmAT

Proceedings of ACM Symposium on Access Control Models and Te...

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24th acm symposium on access control models and technologies, SacmAT 2019

ISBN: (纸本)9781450367530

the proceedings contain 27 papers. the topics discussed include: access control for binary integrity protection using ethereum;FriendGuard: a friend search engine with guaranteed friend exposure degree;brokering policies and execution monitors for IoT middleware;expat: expectation-based policy analysis and enforcement for appified smart-home platforms;owner-centric sharing of physical resources, data, and data-driven insights in digital ecosystems;IoT passport: a blockchain-based trust framework for collaborative Internet-of-things;an OpenRBAC semantic model for access control in vehicular networks;toward detection of access control models from source code via word embedding;and on the difficulty of using patient's physiological signals in cryptographic protocols.

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COLMADE: Collaborative Masking in Auditable Decryption for BFV-based Homomorphic Encryption 22

COLMADE: Collaborative Masking in Auditable Decryption for B...

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10th acm Workshop on Information Hiding and Multimedia Security (IH-MMSec)

作者： Ibarrondo, Alberto Chabanne, Herve Despiegel, Vincent Onen, Melek IDEMIA Sophia Antipolis France EURECOM Sophia Antipolis France IDEMIA Paris France Telecom Paris Paris France

ISBN: (纸本)9781450393553

this paper proposes a novel collaborative decryption protocol for the Brakerski-Fan-Vercauteren (BFV) homomorphic encryption scheme in a multiparty distributed setting, and puts it to use in designing a leakage-resilient biometric identification solution. Allowing the computation of standard homomorphic operations over encrypted data, our protocol reveals only one least significant bit (LSB) of a scalar/vectorized result resorting to a pool of N parties. By employing additively shared masking, our solution preserves the privacy of all the remaining bits in the result as long as one party remains honest. We formalize the protocol, prove it secure in several adversarial models, implement it on top of the open-source library Lattigo and showcase its applicability as part of a biometric access control scenario.

关键词： Muptiparty Homomorphic Encryption Decryption Masking Biometric Identification Secure Computation Leakage Privacy Preserving technologies

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