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Breach occurred 2026-08-01Verifiedquestel.com
What happened
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.
Data exposed
Frequently asked questions
The Questel data breach occurred on August 1, 2026. It was added to Have I Been Pwned's breach catalog on September 1, 2026.
1,226,209 accounts were affected by the Questel data breach, according to Have I Been Pwned's records.
The Questel breach exposed the following data types: Email addresses, Employers, Job titles, Names, Phone numbers, Physical addresses, Support tickets.
Yes. Have I Been Pwned has verified the Questel breach, meaning there's confirmed evidence the exposed data is genuine and tied to real accounts.
Use KazaSec's free Email Breach Checker (/tools/breach-check) to check whether a specific email address has surfaced in the Questel breach, or any other known breach — the tool never stores what you search.
Our free Email Breach Checker tells you whether a specific email address has surfaced in this breach — or any other known breach — without ever storing what you search.
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