Amir Harel's research while affiliated with Ben-Gurion University of the Negev and other places
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Publications (4)
Detecting and preventing data leakage and data misuse poses a serious challenge for organizations, especially when dealing with insiders with legitimate permissions to access the organization's systems and its critical data. In this paper, we present a new concept, Misuseability Weight, for estimating the risk emanating from data exposed to insider...
In this paper we propose a new access control mechanism, Dynamic Sensitivity-Based Access Control (DSBAC), designed to regulate users' access to sensitive data stored in relational databases. The DSBAC is an extension of the basic mandatory access control (MAC) mechanism, and it uses the M-score (Misuseability score) measure in order to assign, dyn...
In previous work we proposed the M-score measure for assigning a misuseability (i.e., sensitivity) score to data records. The M-score uses sensitivity score functions that should be acquired from domain experts. In this paper we present two different approaches for acquiring the required knowledge. In the first method the expert is asked to explici...
Over the past few years data leakage and data misuse have become a major concern for organizations. A data leakage or data misuse incident can damage an organization's reputation and brand name as well as compromise the privacy of its customers. Much research has been conducted in order to find a solution to these threats. Most methods are based on...
Citations
... the user usage details need to be monitored for checking on misuse of data. The author [6,13] present a model where the risk imposed by an user can be estimated. For multi user environment, user specific attributes are to be considered for fine grained access control. ...
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... To predict soil moisture at the tensions of 0 and 6 kPa, the variables total porosity and microporosity were not used in sets A3 and A4 due to the dataleakage effect that happens when the models use information from the variable to be estimated, which may result in an overfit (Harel et al., 2010). ...
... Using this infonnation, the organization can then take appropriate steps to prevent this damage or to minimize its impact. In [7] we show that the M-score fulfill its goal of assigning a sensitivity score to tables of data that is not only accurately but also consistent with domain expert intentions. ...
Reference: Dynamic Sensitivity-Based Access Control
