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Pioneering Acoustic Security Research

Research Project

Project/Area Number 18K19789
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 60:Information science, computer engineering, and related fields
Research InstitutionWaseda University

Principal Investigator

Mori Tatsuya  早稲田大学, 理工学術院, 教授 (60708551)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
KeywordsIoT / セキュリティ / アプリ / 音声 / プライバシー / 音声アシスタント / 音声認識 / 攻撃 / 機械学習 / Cyber deception
Outline of Final Research Achievements

This research project aims to understand the security threats inherent in voice assistant systems. We also developed technologies that aim to mitigate such threats. There are two main themes: (1) attacks on voice assistant systems and (2) attacks by voice assistant systems. We tackled both themes. In the former theme, we studied the feasibility of command injection attacks on voice assistant systems using directed sound beams. We also developed an effective countermeasure against the threat. In the latter theme, we collected and analyzed a large number of voice assistant applications and clarified their behavior and settings.

Academic Significance and Societal Importance of the Research Achievements

本研究で取り組んだ2つのテーマは、より広くはアナログ信号を扱うIoT機器の入出力にかかわる研究テーマの創出、およびユーザからは見えない、音声アシスタントシステムの裏側のロジックであるVAアプリに着目した研究で、ユーザから見える音声インタフェースの背後にある、クラウド側で動作するサービスに内在するセキュリティにかかる、新たな研究テーマの創出につながった。本研究課題は「音声セキュリティ研究の開拓」と銘打ち、音声を使ったシステムにかかる新たなセキュリティ脅威の同定と、その対策方法を開発するためのフレームワークづくりが大きな目標であったが、その目標は十分に達成できたと考えられる。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2019 2018 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (5 results) (of which Invited: 3 results) Remarks (1 results)

  • [Journal Article] Audio Hotspot Attack: An Attack on Voice Assistance Systems Using Directional Sound Beams and its Feasibility2019

    • Author(s)
      Iijima Ryo、Minami Shota、Zhou Yunao、Takehisa Tatsuya、Takahashi Takeshi、Oikawa Yasuhiro、Mori Tatsuya
    • Journal Title

      IEEE Transactions on Emerging Topics in Computing

      Volume: 1 Issue: 4 Pages: 1-15

    • DOI

      10.1109/tetc.2019.2953041

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Poster: A First Look at the Privacy Risks of Voice Assistant Apps2019

    • Author(s)
      Natatsuka Atsuko、Iijima Ryo、Watanabe Takuya、Akiyama Mitsuaki、Sakai Tetsuya、Mori Tatsuya
    • Journal Title

      Proceedings of the 2019 ACM SIGSAC Conference on Computer and Communications Security

      Volume: 1 Pages: 2633-2635

    • DOI

      10.1145/3319535.3363274

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Audio Hotspot Attack: An Attack on Voice Assistance Systems Using Directional Sound Beams2018

    • Author(s)
      Iijima Ryo、Minami Shota、Yunao Zhou、Takehisa Tatsuya、Takahashi Takeshi、Oikawa Yasuhiro、Mori Tatsuya
    • Journal Title

      CCS '18 Proceedings of the 2018 ACM SIGSAC Conference on Computer and Communications Security

      Volume: 1 Pages: 2222-2224

    • DOI

      10.1145/3243734.3278497

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Voice Assistant アプリの大規模実態調査2019

    • Author(s)
      刀塚敦子,飯島涼,渡邉卓弥,秋山満昭,酒井哲也,森達哉
    • Organizer
      コンピュータセキュリティシンポジウム2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] アナログ信号のセキュリティ2019

    • Author(s)
      森達哉
    • Organizer
      電子情報通信学会総合大会計測セキュリティと今後の方向性
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 音波の分離放射による音声認識機器への攻撃:ユーザスタディ評価と対策技術の提案2018

    • Author(s)
      飯島涼、南翔汰、シュウインゴウ、竹久達也、高橋健志、及川靖広、森達哉
    • Organizer
      コンピュータセキュリティシンポジウム2018
    • Related Report
      2018 Research-status Report
  • [Presentation] 音声認識×セキュリティ研究の最新動向 ~ 超音波の分離放射による音声認識機器への 攻撃と対策手法の提案 ~2018

    • Author(s)
      飯島涼
    • Organizer
      ハードウェアセキュリティフォーラム2018 (HWS2018)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 機械学習のセキュリティ2018

    • Author(s)
      森達哉
    • Organizer
      第41回情報理論とその応用シンポジウム(SITA)
    • Related Report
      2018 Research-status Report
    • Invited
  • [Remarks] How to Silently Hack a Smart Speaker

    • URL

      https://spectrum.ieee.org/tech-talk/consumer-electronics/audiovideo/how-to-silently-hack-a-voice-assistance-system

    • Related Report
      2019 Annual Research Report

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Published: 2018-07-25   Modified: 2021-02-19  

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