Who is the MYDATA / ALPHA LOCKER ransomware group?

MYDATA / ALPHA LOCKER is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. breach?

MYDATA / ALPHA LOCKER published data attributed to Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. (~117 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda.

Claimed by MYDATA / ALPHA LOCKER · listed 3 months ago

117 GB

Data size

Age

since listed · data leaked

Status timeline

ListedMay 29, 2026
Data leakeddate unknown

At a glance

Group: MYDATA / ALPHA LOCKER
Status: Data leaked
Country: Brazil
Sector: Manufacturing
Listed on leak site: May 29, 2026
Data size: 117 GB

About the victim

AI dossier — public-source company profile

Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. was founded in October 1972 as a distributor and later manufacturer of DIN ST 52 steel mechanical tubes. Based in Brazil, the company specializes in the production and distribution of specialty steel tubes and related products.

Industry: Steel Tubes & Specialty Steel Manufacturing
Founded: 1972

Attack summary

Severity: medium — Confirmed exfiltration of 117 GB of data from a manufacturing company with potential business-critical information (contracts, financial documents, operational records). No indication of personal data at scale or critical infrastructure impact, but significant business data compromise.

MYDATA/ALPHA LOCKER claims to have exfiltrated 117 GB of data from Mangueira. The group has published the data and disclosed it on their leak site.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company records
Business documents
Operational data

What the group claims

Founded on October 3, 1972, with the objective of importing DIN ST 52 steel mechanical tubes. Later obtained a distribution quota for DIN ST 52 mechanical tubes when Mannesmann S.A. began industrializing this product line.

The leak post

captured from the group's site

The data has been published
PYRAMIS METALLOURGIA S.A.PYRAMIS is the only producer of household electrical appliances in Greece, and at the same time, a Global Champion with presence in more than 85 countries and exports exceeding 97% of its production. PASSWORD for files - @m@0810#! 
The data has been published
Bangkok Eagle Wings Co.,Ltd.67/14 Mu 5 Chuamsamphan Rd. Kokfad. Nongchok. Bangkok 10530. Thailand.Stamping processWelding and assembly processMachining processPainting process 
The data has been published
With over 70 years of rich experience serving in the auto industry, they are one of India's largest car dealerships. 
The data has been published
117 GB data has stolenBakery and confectionery5611 Grossarl | Marktstr. 109+43 (0) 6414 / 2760 
The data has been published
At Verdugo Hills Dental in Glendale, CA, our experienced team is committed to more than just dentistry—we’re here to ensure your comfort and overall well-being every step of the way. From routine check-ups to advanced restorative treatments, we deliver comprehensive care with a gentle touch, alw... 
The data has been published
It is dental practice devoted to restoring and enhancing the natural beauty of your…

Screenshot of the leak post

Leak screenshot for Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda.

Sources

Leak posthttp://mydatae2d63il5oaxxangwnid5loq2qmtsol2ozr6vtb7yfm5ypzo6id.onion/blog

Source

Indexed 3 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About MYDATA / ALPHA LOCKER

MYDATA / ALPHA LOCKER is an emerging ransomware group first observed in May 2026 with financial extortion as its primary motivation, currently representing a nascent threat actor with a very limited publicly documented operational history. Given the extremely limited public reporting available from authoritative sources such as CISA, the FBI, Mandiant, or established security research organizations, the group's origin, affiliation, and infrastructure details remain largely unattributed and unconfirmed at this time. Based on available victim telemetry, the group has targeted at least one organization in Greece with a focus on the manufacturing sector, suggesting either opportunistic targeting or early-stage sector-specific reconnaissance, though no definitive attack methodology, initial access vectors, or encryption tooling details have been publicly documented to a verifiable standard. No notable high-profile campaigns, record ransom demands, or law enforcement actions have been publicly attributed to MYDATA / ALPHA LOCKER as of the time of this assessment. The group appears to be in its earliest operational phase, and its current status, including whether it operates as a Ransomware-as-a-Service model or as an independent closed group, cannot be confirmed without additional corroborating intelligence from authoritative sources; continued monitoring is warranted given its recent emergence. The group has been linked to 19 public disclosures across our corpus. First observed on a leak site on May 14, 2026; most recent post August 14, 2026. The operation is currently active.

Timeline of this disclosure

May 29, 2026Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. listed by MYDATA / ALPHA LOCKERon the group's public leak site

Data size: 117 GB

Other recent disclosures by MYDATA / ALPHA LOCKER

MYDATA / ALPHA LOCKER has been linked to 19 public victims on Darkfield. A sample of the most recent:

See the full MYDATA / ALPHA LOCKER dossier →

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 3,692 disclosures indexed across all operators we track. Geographically, Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. is reported in Brazil, a country with 404 ransomware disclosures in our corpus.

If your organisation is affected

A listing by MYDATA / ALPHA LOCKER means Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CERT.br (Brazil), as required for your jurisdiction.
Monitor for the data appearing on MYDATA / ALPHA LOCKER's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.