high severity February 27, 2024 · 3 min read Unverified claim — what this is

Electro Marteix Listed by ALPHV Ransomware Group

If you are a customer of Electro Marteix, here’s what is being claimed, and what it would mean for you.

EMTEK is the trade name of the company ELECTRO MARTEIX, SL. We have a wide experience of more than 35 years in the industrial, domestic and service sector. We are specialists in the installation of electricity, water, gas, heating, air conditioning, thermal and photovoltaic solar energy, telecommunications, public and private lighting, fire systems, comprehensive maintenance, and implementation of new technologies for energy saving projects for large, medium and small companies and private homes. We are a company with a great concern for sustainability, that is why we are committed to renew
— from Alphv’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

Electro Marteix Listed by ALPHV Ransomware Group

On February 27, 2024, Spanish electrical and renewable-energy installer Electro Marteix (EMTEK) appeared on the leak site of the Alphv ransomware group. The company, which specializes in electricity, water, gas, heating, air conditioning, solar installations, fire systems and maintenance for both businesses and private homes, may have had its internal files exfiltrated during a ransomware attack. The listing does not disclose the number of records affected or the specific types of documents taken.

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Primary Disclosure Details

The Alphv leak site entry states that Electro Marteix suffered a ransomware intrusion and that attackers successfully exfiltrated internal files. No victim count, ransom amount, or detailed inventory of stolen data appears in the posting. The company’s own description confirms it handles projects for large, medium and small companies as well as private residences across industrial, domestic and service sectors. Public reporting on Alphv indicates the group typically posts proof of compromise and begins timed extortion windows once initial negotiations fail.

Why This Matters for You and Your Family

When a local installer like Electro Marteix is breached, any customer, supplier or employee whose information passed through its systems may now be exposed. Internal files often contain names, addresses, phone numbers, contract details, payment records and technical schematics. For homeowners who hired the company to install solar panels, smart heating or security systems, this can mean residential addresses, utility account numbers and even floor plans are at risk. Families who shared personal data during routine service calls now face the possibility that those details are in criminal hands.

Doxxing and Identity-Chain Risks

Exfiltrated internal files rarely stay isolated. Attackers combine leaked customer spreadsheets with other breach data to build full identity profiles. A home address from an Electro Marteix invoice can be linked to an email address seen in an earlier breach, then to social-media accounts or children’s usernames. These chains enable doxxing, targeted phishing, account takeovers and physical threats. Credential leaks of this kind frequently cascade into gaming platforms; a parent’s reused password or a child’s shared family email can hand over Fortnite, Roblox or Steam accounts within hours of the data appearing on underground markets.

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value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

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unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to Alphv · 727 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed February 27, 2024

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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Alphv — 727 incidents tracked

Every breach we've attributed to Alphv, in one running log. See who else they've hit →

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