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Leveraging social networks to gain access to organisational resources

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Abstract

We describe a federated identity management service that allows users to access organisational resources using their existing login accounts at social networking and other sites, without compromising the security of the organisation’s resources. We utilise and extend the Level of Assurance (LoA) concept to ensure the organisation’s site remains secure. Users are empowered to link together their various accounts, including their organizational one with an external one, so that the strongest registration procedure of one linked account can be leveraged by the other sites’ login processes that have less stringent registration procedures. Coupled with attribute release from their organizational account, this allows users to escalate their privileges due to either an increased LoA, or additional attributes, or both. The conceptual and architectural designs are described, followed by the implementation details, the user trials we carried out, and a discussion of the current limitations of the system.
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... 1. Single user-id for many services -The Social Login removes the users need to identify their identity in every application used. Therefore, the user doesn't need to remember different usernames and password combinations (Chadwick, Inman, Siu, & Ferdous, 2011). ...
... 2. The user establishes one connection to a reliable identity provider via a social network. Subsequently, each time the user would like to access an application he will be recognized as authenticated by the identity provider without the user intervention (Chadwick et al., 2011). ...
... Their study shows that the overall security quality of SSO deployments seems to be worrisome. One major problem in using these Social networks for SSO is that they perform little or no authentication of their users' identities at registration time, another major problem is that some of these sites have very weak password policies, so it is relatively easy to masquerade as the site's user (Chadwick et al., 2011). Sun, Pospisil, Muslukhov, Dindar, Hawkey, and Beznosov (2011) conducted a research to examine the users' adoption of the OpenId protocol. ...
... The problem can be resolved if it is possible to link the untrusted IdP with an IdP which is fully trusted by the SP. In such a case, the fully trusted IdP would act like a Proxy IdP as described in [106]. A Proxy IdP can delegate the authentication task to another IdP which is hidden from the SP. ...
... Another scenario has been deployed in which the PPIdP can be federated with a trusted IdP to create a Type 2 PIF. Here, the fully trusted IdP would act like a Proxy IdP as described in [106] and would delegate the authentication task to the PPIdP which is hidden from the SP. The PPIdP will essentially act as an authentication source for the trusted IdP (Figure 6.8). ...
... In addition, many popular social networks utilise OpenID and OAuth protocols to authenticate users and release their attributes to third party service providers. Frameworks are available that allow the integration of such social networks within SAML federations to offer federated services [106]. However, how attributes are released using these protocols or if such protocols can be used to aggregate attributes in a federated setting have not been considered. ...
... A escolha de utilizar um IdP externo se dá pela dificuldade de implementação de um IdP próprio, principalmente por questões de segurança. A escolha de um IdP externo, também se dá principalmente pelo baixo custo de implementação, mesmo que possa acarretar em um custo adicional de manutenção, como observado por (Chadwick et al., 2011). (Chadwick et al., 2011) utilizou a autenticação em redes sociais para garantir o acesso dos seus estudantes aos recursos da universidade. ...
... A escolha de um IdP externo, também se dá principalmente pelo baixo custo de implementação, mesmo que possa acarretar em um custo adicional de manutenção, como observado por (Chadwick et al., 2011). (Chadwick et al., 2011) utilizou a autenticação em redes sociais para garantir o acesso dos seus estudantes aos recursos da universidade. Além disso, a criação de um IdP interno muitas vezes só transfere o problema para outro componente da rede. ...
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Nowadays, the process of installing and configuring computational clouds is becoming more and more simple. Computational clouds like OpenStack, through installation solutions like RedHat RDO and Mirantis Fuel, can be deployed in an easy way. However, especially in private clouds, there is still a need to create and manage multiple users. In this work, we perform a comparison of security aspects of using the OpenID Connect plugin using the Google IdP and using the OpenStack API To provide authentication through Facebook Connect.
... The SSO technologies are an active field of researc and development. Impovements have been proposed to the architecture [4,5,23,27], authentication strength [16,26] , usability [14,24,25], and privacy [1]. On the other hand, less attention has been paid to the termination of the authentication sessions, even though it is a critical part of the authentication process. ...
... There are plenty of OpenID identity providers [28] but only a few services that accept other than their own IdP.OpenID does not require pre-established trust between SP and IdP [22], and that might be one reason why it has not gained worldwide acceptance as a service authentication solution even though many services use it for access control with their own IdP. Moreover, popular OpenID identity providers such as Google do not verify the user's identity in the registration phase, only that the user has a valid email address [5]. However, strong user authentication is possible, e.g. in Estonia, a mobile phone operator acts as an IdP that provides strong verified authentication [12]. ...
Conference Paper
Single sign-on (SSO) helps users to cope with many online services that require authentication. Systems such as OpenID and SAML-based Shibboleth offer federated identity management where an Identity Provider authenticates the user on behalf of the services. Much research concentrates on making authentication stronger, preventing phishing and making the systems more user friendly but less attention has been paid to the termination of the authentication sessions i.e. logout. It is, however, equally important that the sessions do not remain open when, for example, a student using shared computers in a university library leaves the workstation. In this article, we describe challenges related to logout in federated identity management on web based services and give guidelines for implementing reliable logout from services that use single sign-on.
... For instance, securely implementing a local IdP may be a complex task, so it is reasonable to consider using existing solutions. The lower implementation cost may, however, result in an additional maintenance costs, as observed by [28] when using social networking authentication to allow users to access cloud resources. Nevertheless, an external IdP makes it easier to integrate the cloud with external services that rely on the same SSO mechanisms. ...
Conference Paper
The installation and configuration of cloud environments has increasingly become automated and therefore simple. For instance, solutions such as RedHat RDO and Mirantis Fuel facilitate the deployment of popular computational clouds like OpenStack. Despite the advances in usability, effort is still required to create and manage multiple users. This is of particular relevance when dealing with sensitive information, a somewhat common case for private clouds. To alleviate this burden, many clouds have adopted federated Single Sign-On (SSO) mechanisms for authenticating their users in a more transparent manner. In this work we analyze the practical security of an OpenStack IaaS cloud when combined with either OpenID Connect (using Google as IdP) or Facebook Connect (using Facebook as IdP). The criteria used in the analysis comprise the ability to provide data encryption, the risks involved in the use of an external IdP, and improper access control. We identify potential issues regarding these solutions and we propose approaches to fix them.
... For example, if the dynamics are captured using CSP, then the tool FDR3 [9] can be used for automated verification (e.g. using refinement checking to compare specifications of IMSs with their implementations). We would also like to extend our framework to accommodate advanced features of IMS such as attribute aggregation [6] and account linking [5] and to give formal models of extensions of IdM such as Mobile IdM [24]. ...
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There exist disparate sets of definitions with different se-mantics on different topics of Identity Management which often lead to misunderstanding. A few efforts can be found compiling several related vocabularies into a single place to build up a set of definitions based on a common semantic. However, these efforts are not comprehensive and are only textual in nature. In essence, a mathematical model of iden-tity and identity management covering all its aspects is still missing. In this paper we build up a mathematical model of different core topics covering a wide range of vocabular-ies related to Identity Management. At first we build up a mathematical model of Digital Identity. Then we use the model to analyse different aspects of Identity Management. Finally, we discuss three applications to illustrate the ap-plicability of our approach. Being based on mathematical foundations, the approach can be used to build up a solid understanding on different topics of Identity Management.
... The problem can be resolved if it is possible to link the untrusted IdP with an IdP which is fully trusted by the SP. In such a case, the fully trusted IdP would act like a Proxy IdP as described in [38]. The SP would think that it is interacting with the fully trusted IdP while in fact the proxy IdP would delegate the authentication service to the untrusted IdP which is hidden from the SP. ...
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Chapter
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INTRODUCTION 5 26 1.1. NOTATION 5 27 1.2. SCHEMA ORGANIZATION AND NAMESPACES 5 28 1.3. SAML CONCEPTS (NON-NORMATIVE) 6 29 2. ASSERTIONS 7 30 2.1. SCHEMA HEADER AND NAMESPACE DECLARATIONS 7 31 2.2. SIMPLE TYPES 7 32 2.2.1. Simple Type IDType 7 33 2.2.2. Simple Type DecisionType 8 34 2.3. ASSERTIONS 8 35 2.3.1. Element 8 36 2.3.2. Element 9 37 2.3.3. Element 9 38 2.3.3.1. Element 10 39<F11.8
Electronic Authentication Guideline”, NIST Special Publication 800- 63-1 Reasoning about naming systems
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