Disclosure context

About Alphalocker

Alphalocker is a relatively new ransomware group that emerged in January 2024, operating with apparent financial motivations based on their targeting patterns across multiple sectors and countries. The group's origin and affiliations remain unclear due to limited public documentation from major threat intelligence sources, though their global targeting suggests a sophisticated operation. With 31 documented victims primarily concentrated in the United States, United Kingdom, Thailand, Brazil, and Italy, Alphalocker appears to focus on business services, technology, manufacturing, and healthcare sectors, indicating they likely seek targets with both valuable data and the financial capacity to pay ransoms. The group's attack methodology, encryption techniques, and specific tactics have not been extensively documented by major security researchers or government agencies, suggesting either operational security measures that limit visibility into their methods or their relative novelty in the threat landscape. Given the limited public reporting on notable campaigns or high-profile attacks, Alphalocker appears to operate below the radar of major law enforcement initiatives that typically target more established ransomware operations. The group remains active as of available intelligence, though the lack of comprehensive public analysis from established threat intelligence firms suggests they may be a smaller-scale operation or one that has successfully maintained a lower profile compared to more notorious ransomware families. The group has been linked to 59 public disclosures across our corpus. First observed on a leak site on January 24, 2024; most recent post May 14, 2026. The operation is currently active.

Also tracked as: Alpha Ransomware.

Timeline of this disclosure

May 7, 2026Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. listed by Alphalockeron the group's public leak site

Data size: 117 GB

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 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 319 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda.

Claimed by Alphalocker · listed 13 days ago

117 GB

Data size

13d

Age

since listed · data leaked

Status timeline

Listed
May 7, 2026
Data leaked

At a glance

Group: Alphalocker
Status: Data leaked
Country: Brazil
Sector: Manufacturing
Listed on leak site: May 7, 2026
Data size: 117 GB

About the victim

AI dossier — public-source company profile

Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. is a Brazilian company founded on October 3, 1972, originally established to import DIN ST 52 steel mechanical tubes. Following Mannesmann S.A.'s entry into that product line, Mangueira obtained a distribution quota and expanded its role in the steel and special tubes sector. The company operates in Brazil within the industrial steel and metals trade market.

Industry: Steel & Mechanical Tube Distribution and Trading
Founded: 1972

Attack summary

Severity: high — 117 GB of data has been confirmed exfiltrated and published, representing a significant volume of business data from an industrial company; no evidence of regulated personal or financial data at scale, but the confirmed publication of a large dataset warrants a high severity rating.

The Alphalocker ransomware group claims to have exfiltrated 117 GB of data from Mangueira Indústria e Comércio de Tubos e Aços Especiais Ltda. and has published the stolen data. No specific data categories are itemised in the post excerpt beyond the volume claimed.

high

Data the group says was taken

AI dossier — extracted from the leak post

117 GB of company data

What the group claims

Company founded in 1972 specializing in importing and distributing DIN ST 52 steel mechanical tubes

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 13 days 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.