Was HAL Allergy hit by ransomware?

HAL Allergy was listed by the alphv ransomware operation (Spain), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the alphv ransomware group?

alphv 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 HAL Allergy breach?

alphv published data attributed to HAL Allergy. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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HAL Allergy

Claimed by Alphv · listed 3 years ago

32m

Age

since listed · data leaked

Status timeline

ListedNov 2, 2023
Data leakeddate unknown

At a glance

Group: Alphv
Status: Data leaked
Country: Spain
Sector: Healthcare
Listed on leak site: Nov 2, 2023

About the victim

AI dossier — public-source company profile

HAL Allergy is a leading European manufacturer of allergen diagnostic and immunotherapy products, specializing in treatments for common allergies (hay fever, dust mites, insect stings). Based in Leiden, Netherlands, with production facilities and sales organizations across 16 countries including Germany, Poland, Austria, Italy, and Spain.

Industry: Pharmaceutical & Diagnostic — Allergen Immunotherapy
Address: Bio Science Park, Leiden, Netherlands

Attack summary

Severity: medium — Data exfiltration claimed by the group with published disclosure, but no specific sensitive data categories (medical records, PII at scale, financial data) are confirmed in the post. Healthcare sector elevates baseline risk.

The ALPHV group claims to have compromised HAL Allergy and published exfiltrated data; no specifics on encryption or operational disruption are stated in the post.

medium

Data the group says was taken

AI dossier — extracted from the leak post

Company documentation
Business records

What the group claims

HAL Allergy is one of the leading companies in the field of allergen diagnostic and immunotherapies in Europe. The allergy therapies are used against common allergies such as hay fever, house dust mites allergy and allergic reactions towards wasp or bee stings. The company works intensively in collaboration with its sales organizations, distributors and internationally acclaimed research institutes to bring out the best possible combination of knowledge and experience. The company focuses on the core group of allergy experts from the specialties of ENT, Dermatology and Pulmonology. HAL Allergy has the most modern and state-of-the-art production facility at its main site in the Bio Science Park at Leiden in the Netherlands. Currently their products are marketed in 16 countries. Moreover this leading manufacturer of therapeutic and diagnostic agents for allergies has sales organizations in all the major European markets including Germany, Poland, Austria, Italy and Spain.

Sources

Source

Indexed 3 years 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 alphv

ALPHV, also known as BlackCat or Noberus, is a financially motivated ransomware group that emerged in September 2021 and rapidly established itself as one of the most sophisticated and prolific ransomware operations observed by researchers at Mandiant, CISA, and the FBI. The group is suspected to have Russian-speaking origins and operates as a Ransomware-as-a-Service (RaaS) platform, with well-documented links to former affiliates of the DarkSide and BlackMatter ransomware operations, suggesting a continuity of personnel and tradecraft across these successive rebrand events. ALPHV is technically distinguished by its use of Rust-based ransomware — an uncommon choice at the time of its emergence — which enabled cross-platform attacks against Windows, Linux, and VMware ESXi environments; the group employs multiple initial access vectors including compromised credentials, phishing, and exploitation of unpatched vulnerabilities, and routinely conducts double and triple extortion by exfiltrating sensitive data prior to encryption and threatening victims with public disclosure on their dedicated leak site, with some cases involving additional pressure through direct contact with victim customers and regulators. ALPHV has claimed responsibility for high-profile attacks against MGM Resorts International, Caesars Entertainment, Reddit, and healthcare provider Change Healthcare — the latter representing one of the most disruptive cyberattacks on the U.S. healthcare sector on record, with a reported ransom payment of approximately $22 million — and has accumulated over 731 known victims across the United States, Canada, Australia, the United Kingdom, and Germany, with particular concentration in business services, manufacturing, healthcare, technology, and financial services sectors. In December 2023, the FBI and international partners conducted a disruption operation against ALPHV's infrastructure and released a decryption tool for victims; however, the group subsequently attempted to rebrand and continued operations before an apparent final collapse in March 2024, following an alleged exit scam against affiliates after the Change Healthcare ransom payment, with law enforcement officially attributing the group's infrastructure seizure shortly thereafter. The group has been linked to 731 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post March 3, 2024. The operation is currently inactive.

Also tracked as: BlackCat, Noberus.

Timeline of this disclosure

November 2, 2023HAL Allergy listed by alphvon the group's public leak site

Other recent disclosures by alphv

alphv has been linked to 731 public victims on Darkfield. A sample of the most recent:

See the full alphv dossier →

Sector and geography

This disclosure adds to ransomware activity in the Healthcare sector, which has 2,600 disclosures indexed across all operators we track. Geographically, HAL Allergy is reported in Spain, a country with 128 ransomware disclosures in our corpus.

If your organisation is affected

A listing by alphv means HAL Allergy 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, INCIBE-CERT (Spain), as required for your jurisdiction.
Monitor for the data appearing on alphv'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.