Questel

Questel

Data Breach on August 03, 2026
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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 123 @questel.com accounts from external breaches, plus 21 credentials for questel.com itself.

Last checked Nov 1, 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 lists50 accounts · most recent Oct 30, 2026
Passwords for questel.com accounts
Combo lists14 logins · most recent Oct 29, 2026
Infostealer logs7 logins · 1 infected devices · most recent Oct 25, 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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