An examination of the interactive video CAPTCHA method to resist relay attack

• Tatsuda Ryohei

  University of Miyazaki

• Aburada Kentaro

  University of Miyazaki

• Yamaba Hisaaki

  University of Miyazaki

• Katayama Tetsuro

  University of Miyazaki

• Mukunoki Masayuki

  University of Miyazaki

• Park Mirang

  Kanagawa Institute of Technology

• Okazaki Naonobu

  University of Miyazaki

抄録

CAPTCHA is a kind of challenge response test, which is used to distinguish human users from malicious computer program such as bots. However, the attack technique called relay attack as a method to avoid the CAPTCHA has been devised. This attack relays the CAPTCHA challenges to remote human-solvers, let them to decode CAPTCHA challenges. We used delay time that is caused by communications needed in relay attack. Our new CAPTCHA uses this delay time between communications to prevent relay attacks. We constructed an experimental environment in which relay attack can be simulated, made a series of experiments in order to evaluate the performance of the proposed method.

収録刊行物

• IEICE Communications Express

  IEICE Communications Express 7 (4), 136-141, 2018

  一般社団法人 電子情報通信学会

キーワード

• CAPTCHA
• bot
• relay attack
• human solvers
• delay time

詳細情報

• CRID: 1390001205416046592
• NII論文ID: 130006602989
• DOI: 10.1587/comex.2017xbl0192
• ISSN: 21870136
• Web Site: https://www.jstage.jst.go.jp/article/comex/7/4/7_2017XBL0192/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可