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Anne Arundel County

Claimed by Rhysida · listed 2 hours ago

2.6 TB
Data size
814,500 files records
Today
Age
since listed · listed for ransom

Status timeline

  1. ListedOct 11, 2026

Current state: Listed for ransom

At a glance

Group
Rhysida
Status
Listed for ransom
Country
United States
Sector
Government
Listed on leak site
Oct 11, 2026
Data size
2.6 TB
Records
814,500 files

About the victim

AI dossier — public-source company profile

Anne Arundel County is a governmental body established in 1964, headquartered in Anne Arundel County, Maryland. It consists of numerous departments, services and sections providing public administration and services to county residents.

Industry
Local Government Administration
Address
Anne Arundel County, Maryland, US
Founded
1964

Attack summary

Severity: critical — Exfiltration of massive scale (2.6 TB from county alone) involving highly regulated and sensitive data: background checks with SSNs, methadone clinic records under 42 CFR Part 2 (strictest US confidentiality regime), medical records with diagnoses and PHI, financial/banking data, government payroll, and law enforcement intelligence. Multiple categories of PII and regulated health data at scale affecting thousands of individuals and government operations.

Rhysida claims to have exfiltrated 814,500 files totaling 2.6 TB from Anne Arundel County, including background checks, medical records, payroll data, and jail intelligence files. The group also claims separate compromise of law firm Gress Clark Young & Schoepper (167,804 files, ~166.4 GB) containing client banking details, SSNs, medical records, and court e-filing credentials.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • 721 background-check dossiers with full SSNs
  • Tens of thousands of medical faxes (2022–2026) with patient names and diagnoses
  • Methadone clinic records (42 CFR Part 2 regulated)
  • 47,602 medical-assistance files with driver licenses, Green Cards, SSN cards, tax forms, bank data
  • County payroll registers with salaries, HR memos, contracts, pension and discipline databases
  • Jail gang-intelligence files and gang-member master list
  • Law firm banking details, client SSNs and signatures
  • W-9, I-9, W-4 forms with DL/SSN card copies
  • Medical photos and imaging; hundreds of pages of PHI
  • Court e-filing system credentials

What the group claims

Governmental body established in 1964, headquartered in Anne Arundel County, Maryland, consisting of numerous departments, services and sections serving residents. Data includes background-check dossiers with SSNs, medical faxes with patient names and diagnoses, methadone clinic records under 42 CFR Part 2, medical-assistance files with identity documents and financial data, payroll registers, HR records, pension and discipline databases, and jail gang-intelligence files.

The leak post

captured from the group's site
[Gress Clark Young & Schoepper](https://www.gressandclarklaw.com)
167,804 files / ~166.4 GBBanking details - of the firm and its clients.SSNs + signatures of clients/witnesses; W-9, I-9 forms with DL/SSN card copies; W-4 forms.BIIA case-management procedures (Board of Industrial Insurance Appeals): default orders (Order of Default), internal 'Conference Questions', consulting-fee payments to experts.Firm finances: the firm's QuickBooks company file, VOID checks bearing signatures, expert-payment records, SaaS invoices.Medical photos and imaging; hundreds of pages of PHI/APF (Activity Prescription Forms) - X-rays, complete medical records.'Coaching' letters to doctors - including a letter to the physician in the Jachacy matter with wording indicative of steering a medical opinion ('coaching letter') - a potential ethics violation regarding witness handling.Credentials/access to the SPC e-file system (court e-filing).Disciplinary action against partner Daniel W. Gress.
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Data the group says was taken

  • background check dossiers
  • SSNs
  • medical faxes
  • patient names
  • diagnoses
  • methadone clinic records
  • medical-assistance files
  • driver licenses
  • Green Cards
  • SSN cards
  • tax forms
  • bank data
  • payroll registers
  • HR memos
  • contracts
  • pension databases
  • discipline databases
  • gang-intelligence files
  • gang-member master list

Screenshot of the leak post

Leak screenshot for Anne Arundel County

Sources

Source

Indexed 2 hours 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 Rhysida

Rhysida is a ransomware group that emerged in June 2023, operating with primarily financial motivations through targeted attacks against critical infrastructure and public sector organizations. The group's origin and potential state affiliations remain unclear, though they operate independently rather than as a traditional Ransomware-as-a-Service model, with limited public documentation regarding connections to other cybercriminal organizations. Rhysida employs double extortion tactics, typically gaining initial access through compromised VPN credentials and exploiting vulnerable public-facing applications before deploying their ransomware payload and exfiltrating sensitive data prior to encryption. The group has demonstrated a particular focus on healthcare and educational institutions, with notable attacks documented by CISA and FBI advisories highlighting their targeting of hospitals and school districts across multiple countries, resulting in significant operational disruptions to critical services. As of late 2024, Rhysida remains an active threat with continued operations targeting organizations primarily in the United States, Canada, and other Western nations, maintaining their focus on high-value sectors where operational disruption can maximize ransom payment likelihood. The group has been linked to 385 public disclosures across our corpus. First observed on a leak site on June 5, 2023; most recent post October 11, 2026. The operation is currently active.

Timeline of this disclosure

  • October 11, 2026Anne Arundel County listed by Rhysida on the group's public leak site
Data size
2.6 TB
Records
814,500 files

Other recent disclosures by Rhysida

Rhysida has been linked to 385 public victims on Darkfield. A sample of the most recent:

See the full Rhysida dossier →

Sector and geography

This disclosure adds to ransomware activity in the Government sector, which has 685 disclosures indexed across all operators we track. Geographically, Anne Arundel County is reported in United States, a country with 3,176 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Rhysida means Anne Arundel County appeared on a ransomware extortion site and is being pressured to pay before any publication. 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 Rhysida'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.