Auchan suffers cyberattack, data of over 500,000 loyalty customers stolen
On November 19, 2024, French retail giant Auchan announced it was the victim of a cyberattack that targeted personal data of over 500,000 customers enrolled in its loyalty program. The stolen data included names, first names, email addresses, postal addresses, phone numbers, family composition (if provided), dates of birth, loyalty card numbers, and loyalty pot amounts. Auchan confirmed that banking data, passwords, and loyalty card PINs were not affected. The incident was contained, and the company notified the French data protection authority (CNIL) and affected customers.
Signal context
First seen: Nov 19, 2024
Last updated: Jul 2, 2026
Status: Public signal
Key points
- Cyberattack affected over 500,000 Auchan loyalty program customers.
- Stolen data includes names, contact details, family composition, date of birth, loyalty card number, and loyalty pot amount.
- Banking data, passwords, and PINs were not compromised.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Retail Trade
Likely country: 🇫🇷 France
inferred from company domain
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
Likely asset: User or customer data
- 1 signal in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Related signals
Grouped by why the signal is relevant.
ServiceNow Discloses Security Incident Exposing Customer Data
ServiceNow disclosed a security incident on June 12, 2026, where customer data was exposed due to an unauthenticated API vulnerability. The company patched the vulnerability but did not provide specific details on the exact data impacted or the number of affected customers. ServiceNow instances typically store sensitive enterprise information, including IT support tickets, employee records, internal documentation, asset inventories, security incident reports, workflow data, and configuration details for corporate systems and services.
CTIVD: AIVD en MIVD verwerken persoonsgegevens in bulkdata onrechtmatig
The Dutch intelligence services, AIVD and MIVD, have unlawfully processed personal data in bulk datasets, according to a ruling by the Committee for the Supervision of the Intelligence and Security Services (CTIVD). The report, published on July 1, 2026, states that groups of employees had unauthorized access to personal data, and large quantities of data were stored for too long. The bulk datasets, sometimes containing millions of records, include names, phone numbers, location data, social media data, and communication content, sourced from government agencies, commercially available datasets, or stolen datasets offered by criminals. The CTIVD has issued thirteen recommendations to improve the situation.
Aflac Life Insurance Japan Suffers Cybersecurity Breach Exposing Policyholder Data
Aflac Life Insurance Japan disclosed unauthorized access to its systems between June 15 and June 25, 2026. The breach affected files containing policy details, personal information, and bank account information of approximately 4.38 million customers. The company has suspended affected systems and is investigating the incident with third-party cybersecurity experts.
Polymarket Confirms Supply Chain Attack, $3 Million Stolen
Polymarket, a cryptocurrency-based prediction market, confirmed a supply chain attack. A breach of a third-party frontend vendor led to malicious JavaScript being injected into its website. Attackers tricked users into approving fraudulent transactions, resulting in approximately $3 million being stolen from fewer than 15 accounts. The backend systems remained unaffected.
National Association of Insurance Commissioners (NAIC) Confirms Data Breach via Oracle PeopleSoft Zero-Day
The National Association of Insurance Commissioners (NAIC), a US insurance regulatory standards body, confirmed a cyberattack after the ShinyHunters group claimed theft of 3.1TB of data. The breach was reportedly achieved through an Oracle PeopleSoft zero-day vulnerability. ShinyHunters claimed access to regulatory filings, production logs, cloud configuration files, and other internal records.
Chubu Telecommunications C., Inc. Affected by KDDI Corporation Data Breach
Chubu Telecommunications C., Inc., a Japanese internet service provider, was impacted by a data breach originating from an email system provided by KDDI Corporation. Threat actors gained unauthorized access to this shared system by exploiting a vulnerability in third-party software. This led to the potential exposure of up to 14.2 million email addresses and passwords across all affected ISPs. Chubu Telecommunications customers' email addresses and passwords may have been compromised.