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Questel Data Breach

Verified Breach
Jul 31, 2026 Breach Date
1,226,209 Accounts Affected
7 Data Types Exposed
Sep 1, 2026 Added to HIBP
About This Breach
In August 2026, the French intellectual property software and services company Questel was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published an extensive corpus of data they alleged was obtained from the company, largely comprising corporate contact information associated with sales leads, support cases and marketing activities, with 1.2M unique email addresses. The data also included names, employers and job titles, along with physical addresses and phone numbers.
Compromised Data Types
Email addresses Employers Job titles Names Phone numbers Physical addresses Support tickets
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