Takeshi YAGI


Event De-Noising Convolutional Neural Network for Detecting Malicious URL Sequences from Proxy Logs
Toshiki SHIBAHARA Kohei YAMANISHI Yuta TAKATA Daiki CHIBA Taiga HOKAGUCHI Mitsuaki AKIYAMA Takeshi YAGI Yuichi OHSITA Masayuki MURATA 
Publication:   
Publication Date: 2018/12/01
Vol. E101-A  No. 12  pp. 2149-2161
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
drive-by download attackcommunication log analysisdeep neural networkdata augmentation
 Summary | Full Text:PDF(3.9MB)

Identifying Evasive Code in Malicious Websites by Analyzing Redirection Differences
Yuta TAKATA Mitsuaki AKIYAMA Takeshi YAGI Takeo HARIU Kazuhiko OHKUBO Shigeki GOTO 
Publication:   
Publication Date: 2018/11/01
Vol. E101-D  No. 11  pp. 2600-2611
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Mobile Application and Web Security
Keyword: 
malicious websiteredirectionjavascriptevasive code
 Summary | Full Text:PDF(1.7MB)

Fine-Grained Analysis of Compromised Websites with Redirection Graphs and JavaScript Traces
Yuta TAKATA Mitsuaki AKIYAMA Takeshi YAGI Takeshi YADA Shigeki GOTO 
Publication:   
Publication Date: 2017/08/01
Vol. E100-D  No. 8  pp. 1714-1728
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Internet Security
Keyword: 
compromised websitedrive-by downloadredirection graphprogram trace
 Summary | Full Text:PDF(2.6MB)

BotProfiler: Detecting Malware-Infected Hosts by Profiling Variability of Malicious Infrastructure
Daiki CHIBA Takeshi YAGI Mitsuaki AKIYAMA Kazufumi AOKI Takeo HARIU Shigeki GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/05/01
Vol. E99-B  No. 5  pp. 1012-1023
Type of Manuscript:  Special Section PAPER (Special Section on Internet Architectures and Management Methods that Enable Flexible and Secure Deployment of Network Services)
Category: 
Keyword: 
malwarebotnetdynamic analysistemplate
 Summary | Full Text:PDF(2.1MB)

MineSpider: Extracting Hidden URLs Behind Evasive Drive-by Download Attacks
Yuta TAKATA Mitsuaki AKIYAMA Takeshi YAGI Takeo HARIU Shigeki GOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Vol. E99-D  No. 4  pp. 860-872
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Web security
Keyword: 
drive-by downloadweb-based malwarecode analysisredirection analysis
 Summary | Full Text:PDF(912KB)

Automating URL Blacklist Generation with Similarity Search Approach
Bo SUN Mitsuaki AKIYAMA Takeshi YAGI Mitsuhiro HATADA Tatsuya MORI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2016/04/01
Vol. E99-D  No. 4  pp. 873-882
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Web security
Keyword: 
drive-by-downloadURL blacklistsearch spacemachine learningweb client honeypot
 Summary | Full Text:PDF(2MB)

Client Honeypot Multiplication with High Performance and Precise Detection
Mitsuaki AKIYAMA Takeshi YAGI Youki KADOBAYASHI Takeo HARIU Suguru YAMAGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2015/04/01
Vol. E98-D  No. 4  pp. 775-787
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security―Against Cyberattacks―)
Category: Attack Monitoring & Detection
Keyword: 
client honeypotdrive-by downloadweb-based malwareprocess sandboxintrusion detection
 Summary | Full Text:PDF(892.7KB)

Development of Low Loss Ultra-High Δ ZrO2-SiO2 PLC for Next Generation Compact and High-Density Integrated Devices
Masanori TAKAHASHI Yasuyoshi UCHIDA Shintaro YAMASAKI Junichi HASEGAWA Takeshi YAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/07/01
Vol. E97-C  No. 7  pp. 725-730
Type of Manuscript:  INVITED PAPER (Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
integrated opticsMMI coupleroptical communicationoptical deviceplanar lightwave circuit
 Summary | Full Text:PDF(786.6KB)

Analysis of Blacklist Update Frequency for Countering Malware Attacks on Websites
Takeshi YAGI Junichi MURAYAMA Takeo HARIU Sho TSUGAWA Hiroyuki OHSAKI Masayuki MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/01/01
Vol. E97-B  No. 1  pp. 76-86
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
malwarewebsiteblacklistmonitoringstate transitionanalysis
 Summary | Full Text:PDF(3.1MB)

Evaluations and Analysis of Malware Prevention Methods on Websites
Takeshi YAGI Junichi MURAYAMA Takeo HARIU Hiroyuki OHSAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 3091-3100
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
securitywebhoneypotmalwareanti-virusblacklistaccess filtering
 Summary | Full Text:PDF(1.7MB)

Intelligent High-Interaction Web Honeypots Based on URL Conversion Scheme
Takeshi YAGI Naoto TANIMOTO Takeo HARIU Mitsutaka ITOH 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/05/01
Vol. E94-B  No. 5  pp. 1339-1347
Type of Manuscript:  PAPER
Category: Internet
Keyword: 
securitywebhoneypotattackURL conversion
 Summary | Full Text:PDF(641.7KB)

Design of Provider-Provisioned Website Protection Scheme against Malware Distribution
Takeshi YAGI Naoto TANIMOTO Takeo HARIU Mitsutaka ITOH 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/05/01
Vol. E93-B  No. 5  pp. 1122-1130
Type of Manuscript:  Special Section PAPER (Special Section on Technology and Architecture for Sustainable Growth of the Internet)
Category: 
Keyword: 
securitywebvulnerabilityapplicationmalware
 Summary | Full Text:PDF(877.3KB)

Wide-Band High-Bit-Rate WDM Transmission Line with Medial Dispersion Fiber (MDF)
Kazunori MUKASA Takeshi YAGI Kunio KOKURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/02/01
Vol. E85-B  No. 2  pp. 484-486
Type of Manuscript:  Special Section LETTER (Special Issue on 40 Gbit/s Optical Transmission Technologies)
Category: 
Keyword: 
high-bit-rate transmissionmedial dispersion fiberaccumulated dispersionlow non-linearitywideband
 Summary | Full Text:PDF(282.3KB)

Efficient FWM Based Broadband Wavelength Conversion Using a Short High-Nonlinearity Fiber
Osamu ASO Shin-ichi ARAI Takeshi YAGI Masateru TADAKUMA Yoshihisa SUZUKI Shu NAMIKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/06/25
Vol. E83-C  No. 6  pp. 816-823
Type of Manuscript:  Special Section PAPER (Special Issue on Advanced Optical Devices for Next Generation High-Speed Communication Systems and Photonic Networks)
Category: Fibers
Keyword: 
wavelength conversionoptical phase conjugationWDMoptical networkoptical processing
 Summary | Full Text:PDF(1001.8KB)