Queuing Theoretic Analysis of Dynamic Attribute-Based Access Control Systems.

Access resolution in Attribute-based Access Control (ABAC) is primarily through the enforcement of an ABAC policy. However, incremental user-specific authorizations are also often added to supplement the attribute-based accesses. As this auxiliary list of authorizations grows, enforcement becomes increasingly more inefficient, since both the ABAC policy and the specific authorizations are to be evaluated.

Blockchain Based Secure Federated Learning With Local Differential Privacy and Incentivization.

Interest in supporting Federated Learning (FL) using blockchains has grown significantly in recent years. However, restricting access to the trained models only to actively participating nodes remains a challenge even today. To address this concern, we propose a methodology that incentivizes model parameter sharing in an FL setup under Local Differential Privacy (LDP).

Racial disparity in the utilization of immunotherapy for advanced prostate cancer.

Purpose: To identify whether there was a disparity in the utilization of immunotherapy in the treatment of black patients with metastatic castration resistant prostate cancer (mCRPC).

Methods: Using the National Cancer Database, we identified patients between 2010- 2015 with likely minimally/asymptomatic mCRPC. We analyzed annual trends for chemotherapy and immunotherapy use and compared utilization by demographic and clinical features.

Enabling Attribute-based Access Control in NoSQL Databases.

NoSQL databases are being increasingly used for efficient management of high volumes of unstructured data in applications like information retrieval, natural language processing, social computing, etc. However, unlike traditional databases, data protection measures such as access control for these databases are still in their infancy, which could lead to significant vulnerabilities and security/privacy issues as their adoption increases. Attribute-based Access Control (ABAC), which provides a flexible and dynamic solution to access control, can be effective for mediating accesses in typical usage scenarios for NoSQL databases.

Enabling Attribute-Based Access Control in Linux Kernel.

Linux has built-in security features based on discretionary access control that can be enhanced using the Linux Security Module (LSM) framework. However, so far there has been no reported work on strengthening Linux with Attribute-Based Access Control (ABAC), which is gaining in popularity in recent years due to its flexibility and dynamic nature. In this paper, a method for enabling ABAC for Linux file system objects using LSM is proposed.