Questel

Questel

Data Breach on August 03, 2026
Data Breach Report
Victimquestel.com
Claimed ByShinyHunters
Date DiscoveredAug 03, 2026
DescriptionQuestel is an intellectual property and innovation management company based in France, specializing in IP services, patent research, trademark solutions, technology intelligence, and innovation support services for global organizations.
Leak SizeUnknown

Credential Exposure for questel.com

We've indexed 121 @questel.com accounts from external breaches, plus 17 credentials for questel.com itself.

Last checked Sep 13, 2026

@questel.com addresses from external breaches
Third-party breaches95 accounts · across 42 breaches · 87 with a plaintext password · most recent Jan 6, 2026
Combo lists48 accounts · most recent Sep 10, 2026
Passwords for questel.com accounts
Combo lists11 logins · most recent Sep 9, 2026
Infostealer logs6 logins · 1 infected devices · most recent Aug 31, 2026

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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