NDLI: OPEXA: analyser assistant for detecting over-privileged extensions

Content Provider	IET Digital Library
Author	Khazaei, Mina Sadat Homaei, Hossein Shahriari, Hamid Reza
Abstract	Web browsers are enticing attack vectors because they provide an interface to the Internet. Extensions add capabilities to the browsers, and therefore are attractive to attackers. These capabilities are obtained through extension privileges. Some of these privileges are necessary for extensions to perform their claimed functionalities. However, an extension may have some unrequired privileges. Over-privileged extensions may be misused to compromise systems. The authors propose an Over-Privileged EXtension Analyser (OPEXA), to assist security experts in detecting suspicious extensions. OPEXA predicts the intended privileges of extensions based on their descriptions, which are stated by developers in natural language. They utilise this method because real users decide whether to install extensions based on descriptions. They use a supervised machine learning method to train a multi-label classifier that predicts the desired privileges. The extension is assumed to be suspicious if there exists at least one privilege in the extension that is not considered necessary by OPEXA. They evaluate their method on two datasets that consist of real extensions developed in new and old architectures of Firefox. According to the results, they can detect all of over-privileged extensions in these datasets. Their approach can minimise security expert's workload by automating the extension checking process.
Starting Page	558
Ending Page	565
Page Count	8
ISSN	17518709
Volume Number	12
e-ISSN	17518717
Issue Number	Issue 6, Nov (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-ifs/12/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-ifs.2017.0652
Journal	IET Information Security
Publisher Date	2018-06-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Computer Network Security Data Security Desired Privileges Extension Checking Process Extension Privileges Information Network Intended Privileges Internet Knowledge Engineering Technique Learning in AI Online Front-ends OPEXA Over-Privileged EXtension Analyser Over-privileged Extensions Pattern Classification Privilege Security of Data Suspicious Extensions Unrequired Privileges
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems Software

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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