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Paper Abstract and Keywords
Presentation 2015-03-03 10:50
Fast Log Tracing Method for Information-Leakage Prevention
Koki Ikeda, Takuya Suzuki, Pichaya Kietkaroon (Tokai Univ.), Takahiro Hamada, Yuichi Murata (NTT), Junichi Murayama (Tokai Univ.) IN2014-150
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, targeted attacks for enterprise information networks occur frequently and thus secret files are leaking via application gateways. For preventing such attacks, we propose a fast log tracing method. When a gateway transfers a file to outside, it needs to check whether the forwarding file is secret or not. In the conventional method, it traces multiple logs of network equipment sequentially. However, this trace will require long processing time if log volume becomes large. To solve this problem, we first create a black list by way of offline pre-processing. Then a gateway checks the file on line using this black list. The simulation results show that online checking period is almost twenty seconds in the conventional method. In the same condition, it is almost two seconds in our method. On the other hand, as the additional offline processing, our method needs almost two thousands seconds.
Keyword (in Japanese) (See Japanese page) 
(in English) targeted attack / information leakage / SIEM / log tracing / intranet / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 478, IN2014-150, pp. 175-178, March 2015.
Paper # IN2014-150 
Date of Issue 2015-02-23 (IN) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee NS IN  
Conference Date 2015-03-02 - 2015-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To IN 
Conference Code 2015-03-NS-IN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fast Log Tracing Method for Information-Leakage Prevention 
Sub Title (in English)  
Keyword(1) targeted attack  
Keyword(2) information leakage  
Keyword(3) SIEM  
Keyword(4) log tracing  
Keyword(5) intranet  
1st Author's Name Koki Ikeda  
1st Author's Affiliation Tokai University (Tokai Univ.)
2nd Author's Name Takuya Suzuki  
2nd Author's Affiliation Tokai University (Tokai Univ.)
3rd Author's Name Pichaya Kietkaroon  
3rd Author's Affiliation Tokai University (Tokai Univ.)
4th Author's Name Takahiro Hamada  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Yuichi Murata  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
6th Author's Name Junichi Murayama  
6th Author's Affiliation Tokai University (Tokai Univ.)
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Date Time 2015-03-03 10:50:00 
Presentation Time 20 
Registration for IN 
Paper # IEICE-IN2014-150 
Volume (vol) IEICE-114 
Number (no) no.478 
Page pp.175-178 
#Pages IEICE-4 
Date of Issue IEICE-IN-2015-02-23 

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