Papers - OKAZAKI Naonobu
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An evaluation of the interactive video CAPTCHA method against automated attack Reviewed
Kentaro Aburada, Shotaro Usuzaki, Hisaaki Yamaba, Tetsuro Katayama, Masayuki Mukunoki, Mirang Park, Naonobu Okazaki
IEICE Communications Express 8 ( 12 ) 453 - 457 2019.12
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Implementation of CAPTCHA suitable for mobile devices Reviewed
Kentaro Aburada, Shotaro Usuzaki, Hisaaki Yamaba, Tetsuro Katayama, Masayuki Mukunoki, Mirang Park, Naonobu Okazaki
IEICE Communications Express 8 ( 12 ) 601 - 605 2019.12
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Personal Identification with Any Shift: Authentication method for smartwatches having shoulder-surfing resistance Reviewed
Makoto Nagatomo, Kazuki Watanabe, Kentaro Aburada, Naonobu Okazaki, Mirang Park
IEICE Communications Express 8 ( 12 ) 495 - 500 2019.12
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Evaluation of Ad-hoc Secure Device Pairing Method with Accelerometer and Camera Using Marker Reviewed
Makoto Nagatomo, Kentaro Aburada, Naonobu Okazaki, Mirang Park
International Journal of Networking and Computing 9 ( 2 ) 318 - 338 2019.7
Language：English Publishing type：Research paper (scientific journal)
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CHAMSIN: CaptcHA by caMouflaged StrINg Reviewed
Masayuki Mukunoki, Hisaaki Yamaba, Shotaro Usuzaki, Kentaro Aburada, Tetsuro Katayama, Mirang Park, and Naonobu Okazaki
IEICE Communications Express 8 ( 3 ) 55 - 60 2019.3
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Examination of Personal Authentication Method Achieving Shoulder-Surfing Resistance by Combining Mouse Operation and Number Matrix Reviewed
Kensuke Sakamoto, Makoto Nagatomo, Naonobu Okazaki, and Mirang Park
IEICE Communications Express 8 ( 3 ) 61 - 66 2019.3
Language：English Publishing type：Research paper (scientific journal)
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Use of access characteristics to distinguish legitimate user traffic from DDoS attack traffic Reviewed
Kentaro Aburada, Yuki Arikawa, Shotaro Usuzaki, Hisaaki Yamaba, Tetsuro Katayama, Mirang Park, Naonobu Okazaki
Artificial Life and Robotics 1 - 6 2019.1
Authorship：Last author Language：English Publishing type：Research paper (scientific journal) Publisher：Artificial Life and Robotics
© 2019, International Society of Artificial Life and Robotics (ISAROB). Distributed denial of service attacks are a serious threat in the current information society, where the Internet plays an important role as infrastructure. We have been studying ways to mitigate these attacks using a method that distinguishes between legitimate users and attacks. Our previous method was not sufficient because it only analyzed access logs after the attack. In this study, we propose a new method that can distinguish between legitimate users and attacks while the services are running. When the IDS detects an attack, a quarantine server distinguishes legitimate users using access characteristics. The access characteristics are: (1) user follows links, (2) sender accessed a popular page, and (3) the sender’s current average transmission interval. Our experiments confirmed that the proposed method can distinguish between legitimate users and attacks.
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HMD-based Cover Test System for the Diagnosis of Ocular Malalignment Reviewed
Noriyuki Uchida, Kayoko Takatuka, Atsusi Nakazawa, Masayuki Mukunoki, Hisaaki Yamaba, Naonobu Okazaki
Journal of Artificial Life and Robotics, Springer 1 - 6 2019.1
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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An examination of the interactive video CAPTCHA method to resist relay attack Reviewed
Ryohei Tatsuda, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama, Masayuki Mukunoki, Mirang Park, and Naonobu Okazaki
IEICE Communications Express 7 ( 4 ) 136 - 141 2018.4
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Evaluation of Farmers Market Information System to Connect with Some Social Stakeholders Reviewed
Isakwisa Gaddy Tende, Shin-Ichiro Kubota, Hisaaki Yamaba, Kentaro Aburada, Naonobu Okazaki
Journal of Information Processing 26 247 - 256 2018.3
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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A Proposal of Highly Responsive Distributed Denial-of-Service Attacks Detection Using Real-Time Burst Detection Method Reviewed
Shotaro Usuzaki, Yuki Arikawa, Hisaaki Yamaba, Kentaro Aburada, Shin-ichiro Kubota, Mirang Park, Naonobu Okazaki
Journal of Information Processing 26 257 - 266 2018.3
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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On applying support vector machines to a user authentication method using surface electromyogram signals Reviewed
Hisaaki Yamaba, Tokiyoshi Kurogi, Kentaro Aburada, Shin-Ichiro Kubota, Tetsuro Katayama, Mirang Park, Naonobu Okazaki
Artificial Life and Robotics 23 ( 1 ) 87 - 93 2018.3
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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Implementation and User Testing of Personal Authentication Having Shoulder Surfing Resistance with Mouse Operations Reviewed
Makoto Nagatomo, Yoshihiro Kita, Kentaro Aburada, Naonobu Okazaki, Mirang Park
IEICE Communications Express 7 ( 3 ) 77 - 82 2018.3
Language：English Publishing type：Research paper (scientific journal)
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Novel Unsupervised SPITters Detection Scheme by Automatically Solving Unbalanced Situation Reviewed
Kentaroh Toyoda, Mirang Park, Naonobu Okazaki, Tomoaki Ohtsuki
IEEE ACCESS 5 6746 - 6756 2017.6
Language：English Publishing type：Research paper (scientific journal)
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口蹄疫感染地域において潜伏期にある感染農場検出のための数理的手法の開発 Reviewed
高塚佳代子, 関口敏, 山場久昭, 久保田真一郎, 岡崎直宣
化学工学論文集 43 ( 2 ) 117 - 122 2017.3
Language：Japanese Publishing type：Research paper (scientific journal)
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Evaluation of feature values of surface electromyograms for user authentication on mobile devices Reviewed
Hisaaki Yamaba, Akitoshi Kurogi, Shin-Ichiro Kubota, Tetsuro Katayama, Mirang Park, Naonobu Okazaki
Journal of Artificial Life and Robotics, Springer 22 ( 1 ) 108 - 112 2017.3
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)
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（推薦論文）Winnyネットワークにおけるクラスタリングを用いたインデックスポイゾニングシステムの実装と評価 Invited Reviewed
油田健太郎, 山場久昭, 片山徹郎, 朴美娘, 岡崎直宣
情報処理学会論文誌 56 ( 12 ) 2395 - 2405 2015.12
Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal)
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Countermeasure against fingerprinting attack in Tor by separated contents retrieval Reviewed
Naonobu Okazaki, Kentaroh Toyoda, Emiri Yokoyama, Hirofumi So, Tetsuro Katayama, and Mirang Park
IEICE Communications Express 4 ( 12 ) 370 - 375 2015.12
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Security Evaluation System for Android Applications Using User's Reviews and Permissions Reviewed
Naonobu Okazaki, Yoshihiro Kita, Kentaro Aburada, Mirang Park
Journal of Robotics, Networks and Artificial Life, Atlantis Press 2 ( 3 ) 190 - 193 2015.12
Authorship：Lead author, Corresponding author Language：English Publishing type：Research paper (scientific journal)
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Proposal and Its Evaluation of Neighbors Based Routing for ad hoc networks Reviewed
Kentaro Aburada, Hisaaki Yamaba, Shinichiro Kubota, Tetsuro Katayama, Mirang Park, Naonobu Okazaki
Journal of Robotics, Networks and Artificial Life, Atlantis Press 2 ( 2 ) 121 - 125 2015.9
Authorship：Last author Language：English Publishing type：Research paper (scientific journal)