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Harmonic Accounting, Tax & Financial Services

listed as Harmonic Accounting · Claimed by Ciphbit · listed 3 years ago

34m
Age
since listed · data leaked

Status timeline

  1. ListedSep 14, 2023
  2. Data leakeddate unknown

At a glance

Group
Ciphbit
Status
Data leaked
Country
United States
Sector
Financial Services
Listed on leak site
Sep 14, 2023

About the victim

AI dossier — public-source company profile

Harmonic Accounting, Tax & Financial Services is a small Canadian accounting firm based in Thornhill, Ontario, serving clients in the Greater Toronto Area including Vaughan, Richmond Hill, and Markham. The firm specializes in tax preparation, bookkeeping, payroll services, tax planning and consulting, and business incorporation or dissolution for small and medium owner-managed businesses and corporations. It operates primarily through word-of-mouth referrals and positions itself as a full-service accounting practice for individuals and businesses.

Industry
Accounting, Tax & Financial Services
Address
8131 Yonge St., Suite 211, Thornhill, ON L3T 2C6, Canada
Founded
2015

Attack summary

Severity: critical — The firm handles regulated financial and tax data for individuals and businesses, including personal income, corporate filings, payroll and HR records — constituting PII and sensitive financial data at scale. The disclosed status is data_published, indicating confirmed exfiltration and public release of this regulated data.

The Ciphbit ransomware group claims to have attacked Harmonic Accounting, Tax & Financial Services and lists the disclosure status as data_published, indicating exfiltration and publication of data. No specific ransom amount or data volume was stated, but given the nature of the firm, the exposed data likely includes sensitive personal and corporate financial and tax records.

critical

Data the group says was taken

AI dossier — extracted from the leak post
  • Personal tax returns
  • Corporate tax filings
  • Bookkeeping and financial records
  • Payroll and HR data
  • Client business information
  • Investment and rental income records

What the group claims

Harmonic Accounting, Tax & Financial Services brings many years of public practice experience to the table. Harmonic Accounting, Tax & Financial Services is committed to the highest level of integrity, quality and professionalism. We have had privilege of serving clients in many different industries and types of businesses. One of our key goals is to provide a wide array and depth of service to all of our clients. There are many services and areas of expertise we are able to provide. We look forward to discussing these in more depth with you. Harmonic Accounting is a progressively growing accounting firm. We continue to grow due to the referrals we receive through word of mouth from our existing clients. If you are in the market for an accountant in Thornhill, Vaughan, Richmond Hill, and Markham or anywhere in the GTA, we are very excited to speak with you and hope to have the chance to serve you in the near future. Please do not hesitate to call or e-mail us with any questions you might have regarding your tax or accounting situation, or anything else. To our existing clients, we would like to thank you for choosing us for your accounting and tax needs.

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 Ciphbit

Ciphbit is a relatively new ransomware group that emerged in September 2023, operating with primarily financial motivations and demonstrating a focused targeting approach across Western nations. The group's origin and potential affiliations remain largely undocumented by major threat intelligence organizations, though their operational patterns suggest they operate as an independent entity rather than a established ransomware-as-a-service model. With limited public documentation from authoritative sources like CISA, FBI, or major security research firms, specific details regarding their attack methodology, initial access vectors, and encryption techniques have not been comprehensively analyzed or reported in open-source intelligence. The group has claimed responsibility for attacks against 36 documented victims, primarily concentrating their operations in the United States, Italy, France, Germany, and Portugal, with a notable preference for targeting business services, manufacturing, healthcare, and construction sectors. No major high-profile campaigns or significant law enforcement actions against Ciphbit have been publicly documented by authoritative sources as of current reporting. Based on available intelligence, Ciphbit appears to remain active as of late 2023, though their relatively recent emergence and limited public documentation make definitive status assessments challenging without additional confirmed reporting from established threat intelligence sources. The group has been linked to 36 public disclosures across our corpus. First observed on a leak site on September 14, 2023; most recent post February 10, 2026. The operation is currently active.

Timeline of this disclosure

  • September 14, 2023Harmonic Accounting listed by Ciphbiton the group's public leak site

Other recent disclosures by Ciphbit

Ciphbit has been linked to 36 public victims on Darkfield. A sample of the most recent:

See the full Ciphbit dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,184 disclosures indexed across all operators we track. Geographically, Harmonic Accounting is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Ciphbit means Harmonic Accounting 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 Ciphbit'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.