According to fuitededonnées.fr, Les Mousquetaires, which runs Intermarché, suffered a cyberattack that leaked personal data of 287,605 customers of its Drive click-and-collect service [1]. The data include names, birth dates, loyalty card numbers, billing addresses, phone numbers and online order numbers and amounts; the company says bank details and passwords were not affected and it filed a complaint and notified the CNIL [1]. fuitededonnées.fr advises not clicking links in texts, WhatsApp messages or emails claiming to be from Intermarché, checking orders via the official site, and calling customer service on 0 805 101 115 if in doubt [1].
This event has not been officially confirmed. Content is based on media or third-party reports.
Backfill: this event became public on Aug 3, 2026 and we added it on Nov 11, 2026. It is not a new event.
MediumMonitoringBackfillMedia reported
French supermarket Intermarché's Drive service hacked; about 288,000 customers' data leaked
1 min read
- Disclosed
- Aug 3, 2026
- Published
- Nov 11, 2026
- Last updated
- Nov 11, 2026
- Scale
- 287,605 people[1]
- CVSS basis
- Our assessment
- Attack vector
- Impact
- Data type
- Actor type
- Motivation
On this page
30-second summary
Timeline
- Incident disclosed[1]
Technical details
Remediation
Vendor guidance
- 1Beware of impersonation verify[1]
Do not click links claiming to be Intermarché; check orders on the official site.
References
Media1
- [1]fuitededonnées.fr2026-08-03Accessed 2026-11-11Snapshot 2026-11-11 sha256 97f2a6725cf8
“Le Groupement Les Mousquetaires, qui exploite l'enseigne Intermarché, a été victime d'une cyberattaque ayant entraîné la fuite de données personnelles de 287 605 clients de son service Drive, selon l'enseigne.”
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