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Paper Abstract and Keywords
Presentation 2024-03-22 12:35
Open Secrets of GPTs
Yusuke Kubo (NTT Communications), Tomoaki Tani (NTT Security), Ryusei Watanabe (N.F.Laboratories/Waseda Univ), Takuro Wakai, Yuto Toshikawa (Waseda Univ.), Tatsuya Mori (Waseda Univ. /NICT/ RIKEN) ICSS2023-91
Abstract (in Japanese) (See Japanese page) 
(in English) OpenAI released a service called GPTs in November 2023. Creating GPTs with arbitrary functionalities is straightforward; however, GPTs face a vulnerability known as Prompt Leaking, where the data used in their development can be leaked through specific attack prompts.
In this study, we conducted a large-scale survey of publicly available GPTs to clarify the reality of the Prompt Leaking threat. In the process of analyzing the GPTs, we also discovered three generic attack methods to evade Prompt Leaking countermeasures.
In this paper, we describe the results of our survey, the details of the attack methods we discovered, and countermeasures to raise awareness of the Prompt Leaking threat in GPTs.
Keyword (in Japanese) (See Japanese page) 
(in English) GPTs / Prompt Leaking / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 448, ICSS2023-91, pp. 160-165, March 2024.
Paper # ICSS2023-91 
Date of Issue 2024-03-14 (ICSS) 
ISSN 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 ICSS IPSJ-SPT  
Conference Date 2024-03-21 - 2024-03-22 
Place (in Japanese) (See Japanese page) 
Place (in English) OIST 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Security, Trust, etc. 
Paper Information
Registration To ICSS 
Conference Code 2024-03-ICSS-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Open Secrets of GPTs 
Sub Title (in English)  
Keyword(1) GPTs  
Keyword(2) Prompt Leaking  
1st Author's Name Yusuke Kubo  
1st Author's Affiliation NTT Communications Corporation (NTT Communications)
2nd Author's Name Tomoaki Tani  
2nd Author's Affiliation NTT Security (Japan) KK (NTT Security)
3rd Author's Name Ryusei Watanabe  
3rd Author's Affiliation N.F.Laboratories Inc./Waseda University (N.F.Laboratories/Waseda Univ)
4th Author's Name Takuro Wakai  
4th Author's Affiliation Waseda University (Waseda Univ.)
5th Author's Name Yuto Toshikawa  
5th Author's Affiliation Waseda University (Waseda Univ.)
6th Author's Name Tatsuya Mori  
6th Author's Affiliation Waseda University/NICT/RIKEN AIP (Waseda Univ. /NICT/ RIKEN)
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Speaker Author-1 
Date Time 2024-03-22 12:35:00 
Presentation Time 25 minutes 
Registration for ICSS 
Paper # ICSS2023-91 
Volume (vol) vol.123 
Number (no) no.448 
Page pp.160-165 
Date of Issue 2024-03-14 (ICSS) 

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