Conference
Symposium on Access Control Models and Technologies
About: Symposium on Access Control Models and Technologies is an academic conference. The conference publishes majorly in the area(s): Access control & Role-based access control. Over the lifetime, 523 publications have been published by the conference receiving 20827 citations.
Topics: Access control, Role-based access control, Computer science, Computer access control, Security policy
Papers published on a yearly basis
Papers
3 Jun 2002
TL;DR: The concept of Usage Control (UCON) is developed that encompasses traditional access control, trust management, and digital rights management and goes beyond them in its definition and scope and offers a promising approach for the next generation of access control.
Abstract: In this paper we develop the concept of Usage Control (UCON) that encompasses traditional access control, trust management, and digital rights management and goes beyond them in its definition and scope. While usage control concepts have been mentioned off and on in the security literature for some time, there has been no systematic treatment so far. By unifying these three areas UCON offers a promising approach for the next generation of access control. Traditional access control has focused on a closed system where all users are known and primarily utilizes a server-side reference monitor within the system. Trust management has been introduced to cover authorization for strangers in an open environment such as the Internet. Digital rights management has dealt with client-side control of digital information usage. Each of these areas is motivated by its own target problems. Innovations in information technology and business models are creating new security and privacy issues which require elements of all three areas. To deal with these in a systematic unified manner we propose the new UCON model. UCON enables finer-grained control over usage of digital objects than that of traditional access control policies and models. For example, print once as opposed to unlimited prints. Unlike traditional access control or trust management, it covers both centrally controllable environment and an environment where central control authority is not available. UCON also deals with privacy issues in both commercial and non-commercial environments. In this paper we first discuss access control, trust management, and digital rights management and describe general concepts of UCON in the information security discipline. Then we define components of the UCON model and discuss how authorizations and access controls can be applied in the UCON model. Next we demonstrate some applications of the UCON model and develop further details. We use several examples during these discussions to show the relevance and validity of our approach. Finally we identify some open research issues.
429 citations
1 Jun 2005
TL;DR: The proposed privacy preserving access control model for relational databases, which relies on the well-known RBAC model as well as the notion of conditional role which is based on the notions of role attribute and system attribute is extended to handle other advanced data managements systems.
Abstract: As privacy becomes a major concern for both consumers and enterprises, many research efforts have been devoted to the development of privacy protecting technology. We recently proposed a privacy preserving access control model for relational databases,where purpose information associated with a given data element specifies the intended use of the data element. In this paper, we extend our previous work to handle other advanced data managementsystems, such as the ones based on XML and the ones based on the object-relational data model. Another contribution of our paper isthat we address the problem of how to determine the purpose forwhich certain data are accessed by a given user. Our proposedsolution relies on the well-known RBAC model as well as the notionof conditional role which is based on the notions of role attributeand system attribute.
376 citations
20 Jun 2012
TL;DR: This paper investigates the feasibility of using both the permissions an app requests, the category of the app, and what permissions are requested by other apps in the same category to better inform users whether the risks of installing an app is commensurate with its expected benefit.
Abstract: The phenomenal growth of the Android platform in the past few years has made it a lucrative target of malicious application (app) developers. There are numerous instances of malware apps that send premium rate SMS messages, track users' private data, or apps that, even if not characterized as malware, conduct questionable actions affecting the user's privacy or costing them money. In this paper, we investigate the feasibility of using both the permissions an app requests, the category of the app, and what permissions are requested by other apps in the same category to better inform users whether the risks of installing an app is commensurate with its expected benefit. Existing approaches consider only the risks of the permissions requested by an app and ignore both the benefits and what permissions are requested by other apps, thus having a limited effect. We propose several risk signals that and evaluate them using two datasets, one consists of 158,062 Android apps from the Android Market, and another consists of 121 malicious apps. We demonstrate the effectiveness of our proposal through extensive data analysis.
333 citations
20 Jun 2007
TL;DR: The role mining problem (RMP) is defined as the problem of discovering an optimal set of roles from existing user permissions, and its theoretical bounds are analyzed to show that RMP is an NP-complete problem.
Abstract: Devising a complete and correct set of roles has been recognized as one of the most important and challenging tasks in implementing role based access control. A key problem related to this is the notion of goodness/interestingness -- when is a role good/interesting? In this paper, we define the role mining problem (RMP) as the problem of discovering an optimal set of roles from existing user permissions. The main contribution of this paper is to formally define RMP, and analyze its theoretical bounds. In addition to the above basic RMP, we introduce two different variations of the RMP, called the δ-approx RMP and the Minimal Noise RMP that have pragmatic implications. We reduce the known "set basis problem" to RMP to show that RMP is an NP-complete problem. An important contribution of this paper is also to show the relation of the role mining problem to several problems already identified in the data mining and data analysis literature. By showing that the RMP is in essence reducible to these known problems, we can directly borrow the existing implementation solutions and guide further research in this direction.
333 citations
2 Jun 2003
TL;DR: This paper proposes a flexible delegation model named Permission-based Delegation Model (PBDM), which is built on the well known RBAC96 model, and supports both role and permission level delegation, which provides great flexibility in authority management.
Abstract: Role-based access control (RBAC) is recognized as an efficient access control model for large organizations. Most organizations have some business rules related to access control policy. Delegation of authority is among these rules. RBDM0 and RDM2000 models are recently published models for role-based delegation. They deal with user-to-user delegation. The unit of delegation in them is a role. But in many cases users may want to delegate a piece of permission from a role. This paper proposes a flexible delegation model named Permission-based Delegation Model (PBDM), which is built on the well known RBAC96 model. PBDM supports user-to-user and role-to-role delegations with features of multi-step delegation and multi-option revocation. It also supports both role and permission level delegation, which provides great flexibility in authority management. In PBDM, a security administrator specify the permissions that a user (delegator) has authority to delegate to others (delegatee), then the delegator creates one or more temporary delegation roles and assigns delegatees to particular roles. This gives us clear separation of security administration and delegation.
240 citations
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 20 |
| 2020 | 25 |
| 2019 | 27 |
| 2018 | 29 |
| 2017 | 29 |
| 2016 | 23 |