Presentation 2023-03-13
Evaluation and countermeasures of notification destination restoration attacks using password recovery functions of multiple web services
Ryusei Ishikawa, Soramichi Akiyama, Atsuo Inomata, Tetsutaro Uehara,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Many web services with a login function using pair of ID and password have the password recovery function in case the user forgets his/her password. The password recovery function reveals a part of the email address which is to send the URL to recover the corresponding password. However, if the user has registered for multiple web services using the same ID, the attacker can easily guess the email address by aggregating the disclosed parts. In this paper, we discuss possible attack that reconstructs the email address using the password recovery function of multiple web services and evaluate its effectiveness. We also propose countermeasures against the attack that reconstructs email addresses.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Web / security / password recovery / email address / privacy
Paper # ICSS2022-62
Date of Issue 2023-03-06 (ICSS)

Conference Information
Committee ICSS / IPSJ-SPT
Conference Date 2023/3/13(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Okinawaken Seinenkaikan
Topics (in Japanese) (See Japanese page)
Topics (in English) Security, Trust, etc.
Chair Katsunari Yoshioka(Yokohama National Univ.)
Vice Chair Takahiro Kasama(NICT) / Akira Yamada(KDDI labs.)
Secretary Takahiro Kasama(Okayama Univ.) / Akira Yamada(Mitsubishi Electric)
Assistant Takeshi Sugawara(Univ. of Electro-Comm.) / Yo Kanemoto(NTT)

Paper Information
Registration To Technical Committee on Information and Communication System Security / Special Interest Group on Security Psychology and Trust
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation and countermeasures of notification destination restoration attacks using password recovery functions of multiple web services
Sub Title (in English)
Keyword(1) Web
Keyword(2) security
Keyword(3) password recovery
Keyword(4) email address
Keyword(5) privacy
1st Author's Name Ryusei Ishikawa
1st Author's Affiliation Ritsumeikan University(Ritsumeikan Univ.)
2nd Author's Name Soramichi Akiyama
2nd Author's Affiliation Ritsumeikan University(Ritsumeikan Univ.)
3rd Author's Name Atsuo Inomata
3rd Author's Affiliation Ritsumeikan University, Osaka University(Ritsumeikan Univ., Osaka Univ.)
4th Author's Name Tetsutaro Uehara
4th Author's Affiliation Ritsumeikan University(Ritsumeikan Univ.)
Date 2023-03-13
Paper # ICSS2022-62
Volume (vol) vol.122
Number (no) ICSS-422
Page pp.pp.85-90(ICSS),
#Pages 6
Date of Issue 2023-03-06 (ICSS)