Questel
questel.com
About This Breach
Questel, an intellectual property and innovation management company, was compromised in August 2026, exposing 1.7M unique email addresses along with physical addresses, dates of birth, phone numbers, and internal corporate data from more than 21M Salesforce records.
Data Exposed
Breach Details
| Breach Type | Data Breach |
| Searchable | Yes |
| Verified | Yes |
| Sensitive Data | No |
| Reference | No reference available |
Frequently Asked Questions
When did the Questel data breach happen?
Questel was breached in Aug 2026. The breach was added to the XposedOrNot index on August 25, 2026.
How many records were exposed in the Questel breach?
1,744,241 records were exposed, making it the #321 largest of the 778 breaches in our index.
What data was exposed in the Questel breach?
The exposed data includes: Email addresses, Physical addresses, Dates of birth, Phone numbers, .
What should I do if I was affected by the Questel breach?
Change your password on the affected service (and anywhere you reused it), turn on two-factor authentication, and set up free breach alerts on XposedOrNot so you know the moment your email appears in a new breach.
More Information Technology Breaches
What Should You Do?
Enable Two-Factor Authentication
Add 2FA on all supported accounts using an authenticator app like Google Authenticator or Authy.
Watch for Phishing Calls & SMS
Be cautious of unexpected calls or texts asking for personal information.
Beware of Scam Mail
Be skeptical of unexpected correspondence requesting personal details.
Monitor Your Accounts
Set up login alerts and review account activity regularly for suspicious access.