Was Lewis Drug hit by ransomware?

Lewis Drug was listed by the AiLock ransomware operation (United States), 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 AiLock ransomware group?

AiLock 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 Lewis Drug breach?

AiLock published data attributed to Lewis Drug (~6 TB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Lewis Drug

Claimed by AiLock · listed 4 months ago

6 TB

Data size

Age

since listed · data leaked

Status timeline

ListedMar 3, 2026
Data leakeddate unknown

At a glance

Group: AiLock
Status: Data leaked
Country: United States
Sector: Consumer Services
Listed on leak site: Mar 3, 2026
Data size: 6 TB

About the victim

AI dossier — public-source company profile

Lewis Drug is a regional chain of drug and pharmacy stores founded in 1942 and headquartered in Sioux Falls, South Dakota. The company operates numerous retail locations offering prescription and non-prescription drugs, groceries, health and beauty products, seasonal goods, and photo processing services. Lewis Drug serves communities primarily across South Dakota and surrounding states.

Industry: Pharmacy & Drug Store Retail
Employees: 1001-5000
Founded: 1942

Attack summary

Severity: critical — Lewis Drug operates pharmacies handling prescription drug records and patient health information regulated under HIPAA. A confirmed data publication by a ransomware group against a pharmacy chain constitutes a critical disclosure due to the high likelihood of regulated medical and PII data exposure at scale.

AiLock claims to have compromised Lewis Drug and has published data, though no specific data volume or ransom amount was stated. Given Lewis Drug operates pharmacies, the potential exposure includes prescription records and related personally identifiable and medical information.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Prescription records
Patient/customer PII
Non-prescription purchase data
Employee records
Business operational data

What the group claims

Founded in 1942, Lewis Drug owns and operates a chain of drug and pharmacy stores.It provides prescription and non-prescription drugs.

The leak post

captured from the group's site

Good morning. Thou hast had a good night's sleep, I hope.
FUJIFILM Speciality Ink Systems 6Tb uncompressed data
proservicecall.com prvn.com 199Gb uncompressed data
Integral Analytics specializes in data intelligence solutions for the energy sector, focusing on improving planning and forecasting for utilities, producers, manufacturers, and regulators. Their flagship products include LoadSEER, DSMore, and IDROP, which assist in energy efficiency, demand response, and distributed energy resource management.
AJ Networks Co. Ltd is a company that operates in the Other Rental Stores (Furniture, A/V, Construction & Industrial Equipment) industry. It employs 500to999 people and has 500Mto1G of revenue. The company is headquartered in Seoul, South Korea.
Revival Animal Health was founded in 1989 by Dr. Roy Nielsen, Jr., affectionately known as "Doc Roy." Quickly the company expanded from pet vaccines to an extensive line of pet healthcare products.
HomeSite Services Inc., a residential, commercial and retail services company, was founded in 2005 with three goals in mind: to perform superior work, offer quality products, and provide our clients with unbeatable service.
Founded in 1942, Lewis…

Screenshot of the leak post

Sources

Victim sitelewisdrug.com

Source

Indexed 4 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 AiLock

AiLock is an emerging ransomware group first observed in March 2026 with a primarily financial motivation, having targeted at least 24 known victims across multiple sectors. The group's origin and affiliations remain largely undocumented by major threat intelligence organizations, though their targeting patterns suggest a broad operational scope spanning the United States, Canada, Great Britain, China, and Germany. Based on publicly available information from security researchers, AiLock appears to focus on technology companies, consumer services, manufacturing, and public sector entities, though specific attack methodologies, initial access vectors, and encryption techniques have not been extensively documented by CISA, FBI, or major security firms. The group's relatively recent emergence and limited public documentation suggest they may be a smaller operation or newly formed entity, with no notable major campaigns or high-profile ransoms publicly reported by established threat intelligence sources. Given the March 2026 first observation date and lack of subsequent major public reporting, AiLock's current operational status and capabilities remain largely undetermined by mainstream cybersecurity organizations. The group has been linked to 47 public disclosures across our corpus. First observed on a leak site on March 3, 2026; most recent post July 15, 2026. The operation is currently active.

Timeline of this disclosure

March 3, 2026Lewis Drug listed by AiLockon the group's public leak site

Data size: 6 TB

Other recent disclosures by AiLock

AiLock has been linked to 47 public victims on Darkfield. A sample of the most recent:

See the full AiLock dossier →

Sector and geography

This disclosure adds to ransomware activity in the Consumer Services sector, which has 829 disclosures indexed across all operators we track. Geographically, Lewis Drug is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by AiLock means Lewis Drug 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, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on AiLock'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.