What was exposed, when it happened, and which databases confirm it.
- accounts
- 1,958,522
- Breached
- August 1, 2026
- Last Update
- September 1, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
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.
Compromised Info
- Email addresses
- Employers
- Job titles
- Names
- Phone numbers
- Physical addresses
- Support tickets
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- LeakCheck— linked via automatic string matching
- HIBP
FAQ
What was leaked in the Questel breach?
The Questel breach exposed: Email addresses, Employers, Job titles, Names, Phone numbers, Physical addresses, and Support tickets.
When did the Questel breach happen?
The Questel breach was disclosed on August 1, 2026 and affected 1,958,522 records.
Am I affected by the Questel breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the Questel leak.