WriteShield: A Pseudo Thin Client for Prevention of Information Leakage

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/02/01

タイトル(英語): WriteShield: A Pseudo Thin Client for Prevention of Information Leakage

著者名: Yasuhiro Kirihata (Hitachi Solutions, Ltd.), Yoshiki Sameshima (Hitachi Solutions, Ltd.), Takashi Onoyama (Hitachi Solutions, Ltd.), Norihisa Komoda (Osaka University)

著者名(英語): Yasuhiro Kirihata (Hitachi Solutions, Ltd.), Yoshiki Sameshima (Hitachi Solutions, Ltd.), Takashi Onoyama (Hitachi Solutions, Ltd.), Norihisa Komoda (Osaka University)

キーワード: data loss prevention，local disk protection，pseudo thin client

要約(英語): While thin-client systems are diffusing as an effective security method in enterprises and organizations, there is a new approach called pseudo thin-client system. In this system, local disks of clients are write-protected and user data is forced to save on the central file server to realize the same security effect of conventional thin-client systems. Since it takes purely the software-based simple approach, it does not require the hardware enhancement of network and servers to reduce the installation cost. However there are several problems such as no write control to external media, memory depletion possibility, and lower security because of the exceptional write permission to the system processes. In this paper, we propose WriteShield, a pseudo thin-client system which solves these issues. In this system, the local disks are write-protected with volume filter driver and it has a virtual cache mechanism to extend the memory cache size for the write protection. This paper presents design and implementation details of WriteShield. Besides we describe the security analysis and simulation evaluation of paging algorithms for virtual cache mechanism and measure the disk I/O performance to verify its feasibility in the actual environment.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.2 （2012） 特集：多様な情報社会に適応するシステム技術

本誌掲載ページ: 253-259 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/132/2/132_2_253/_article/-char/ja/