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Threat Actor Claims Sale of Naturgy Customer Database Affecting 1.6 Million Spanish Citizens

A threat actor claims to be selling a database of 1.6 million Naturgy customers, including sensitive information like national IDs and IBANs, raising potential identity theft risks.
Screenshot of a forum post advertising the alleged sale of a Naturgy customer database. The seller claims the dataset contains records belonging to 1.6 million Spanish citizens, including personal information, utility account details, and IBAN banking data. The post includes a detailed database schema and a blurred sample of customer records. Sensitive information has been redacted by BreachNews.
A threat actor claims to be selling a database allegedly linked to Spanish energy provider Naturgy containing records associated with 1.6 million customers. The post includes a detailed schema, sample records, and claims the dataset contains DNI/NIF identifiers, contact information, utility account data, and IBAN banking details. BreachNews has not independently verified the authenticity of the alleged dataset.

A threat actor is claiming to be selling a database allegedly belonging to Naturgy, one of Spain’s largest energy providers, containing records associated with approximately 1.6 million customers.

According to the listing, the purported dataset includes customer names, addresses, phone numbers, email addresses, Spanish national identification numbers (DNI/NIF), and IBAN bank account details. The seller describes the information as “fresh” and claims the database is being offered to the highest bidder.

BreachNews has not independently verified the authenticity of the alleged dataset or confirmed that the information originated from Naturgy.

The threat actor published screenshots appearing to show customer records exported in CSV format alongside a detailed database schema containing utility account, contract, billing, and customer enrollment fields. References within the sample data appear consistent with Spanish energy service records, including fields related to gas and electricity accounts, tariffs, service activation details, and customer identifiers.

Alleged utility customer data offered for sale

The seller claims the database contains information on more than 1.6 million Spanish citizens and is offering a free sample consisting of 5,000 records to prospective buyers.

According to the post, the alleged data includes customer contact information, banking details, utility service identifiers, contract information, and other account-related records.

If authentic, the exposure of national identification numbers and IBAN details could present risks including identity theft, financial fraud, targeted phishing campaigns, and social engineering attacks against affected customers. The claim follows other recent utility-sector breach allegations reported by BreachNews, including an alleged iGreen Energy breach involving 5 million records that reportedly exposed utility account information, credentials, and KYC-related data.

Screenshots show extensive customer records

Screenshots accompanying the listing appear to show large volumes of customer data displayed in CSV format. The records include numerous fields associated with utility account management and customer onboarding processes.

While the screenshots provide some evidence that the seller possesses a substantial dataset, they do not independently confirm that the information originated from Naturgy or that the claimed record count is accurate.

Threat actors frequently exaggerate dataset sizes, combine information from multiple sources, or misrepresent the origin of records to increase the value of a sale.

Naturgy has not publicly addressed the claim

Naturgy is one of Spain’s largest energy companies, providing electricity and natural gas services to millions of residential and commercial customers.

At the time of publication, Naturgy had not issued any public statement regarding the alleged database sale.

Additional analysis of the purported dataset would be required to verify the source of the records, determine whether the information is current, and assess the overall scope of the alleged exposure.

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m00s3c

Moose (@m00s3c) is the author of BreachNews, focusing on data breach intelligence, dark web monitoring, and threat analysis. His work involves analyzing breach claims, reviewing leaked datasets, and tracking threat actor activity to provide clear, factual reporting.

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