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Banner and Associates

Claimed by Trinity · listed 2 years ago

1.5 TB
Data size
$7.6M
Ransom
demanded
23m
Age
since listed · data leaked

Status timeline

  1. ListedAug 13, 2024
  2. Data leakeddate unknown

At a glance

Group
Trinity
Status
Data leaked
Country
United States
Listed on leak site
Aug 13, 2024
Data size
1.5 TB
Ransom demanded
$7.6M
Estimated revenue
$7.6M

About the victim

AI dossier — public-source company profile

Banner and Associates is a long-established firm of Chartered Accountants based in Harrow, Middlesex, UK. They provide tax, accounts, compliance, business advisory, and umbrella services to businesses of all sizes, positioning themselves on personal service and professional expertise.

Industry
Accounting & Tax Services
Address
29 Byron Road, Harrow, Middlesex HA1 1JR, United Kingdom

Attack summary

Severity: critical — Confirmed exfiltration of 1.5 TB of accounting firm data containing sensitive financial, tax, and personal information belonging to multiple business clients. Accounting firms hold regulated financial data, PII, and tax records for many companies; breach affects both the firm and potentially hundreds of client organizations.

Trinity claims to have exfiltrated the company's full database (1.5 TB) containing financial and client records. The group announced the breach with a stated ransom demand of $7.6 million and published the data on 2024-09-20.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Client financial records
  • Tax return data
  • Business accounting files
  • Compliance documentation
  • Client questionnaires and forms

What the group claims

full data base(1,5 TB) - Revenue: $7.6 Million - Publication date: 2024-09-20

Sources

Source

Indexed 2 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 Trinity

Trinity is a recently emerged ransomware group first observed in June 2024, operating with apparent financial motivations based on their targeting patterns across multiple sectors and countries. The group has been documented attacking 18 victims primarily across the United States, Spain, Canada, Philippines, and Argentina. Their operational methodology demonstrates a focus on business services, healthcare, technology, and manufacturing sectors, suggesting they may be opportunistically targeting organizations with critical infrastructure dependencies and higher likelihood of ransom payment. Given the limited public documentation from major cybersecurity agencies and the group's recent emergence, specific details about their country of origin, ransomware-as-a-service model, initial access vectors, encryption methods, or double extortion tactics have not been extensively reported by CISA, FBI, or established threat intelligence firms. No major high-profile attacks or significant law enforcement actions against Trinity have been publicly documented to date. The group appears to remain active as of current reporting, though their relatively small victim count and recent emergence suggest they may be in early operational phases or operating with limited scale compared to more established ransomware families. The group has been linked to 18 public disclosures across our corpus. First observed on a leak site on June 11, 2024; most recent post March 16, 2025. The operation is currently inactive.

Timeline of this disclosure

  • August 13, 2024Banner and Associates listed by Trinityon the group's public leak site
Data size
1.5 TB
Ransom demanded
$7.6M

Other recent disclosures by Trinity

Trinity has been linked to 18 public victims on Darkfield. A sample of the most recent:

See the full Trinity dossier →

Sector and geography

Geographically, Banner and Associates is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Trinity means Banner and Associates 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 Trinity'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.