Was Advanced Accounting & Business Advisory hit by ransomware?

Advanced Accounting & Business Advisory was listed by the Sarcoma ransomware operation (New Zealand), 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 Sarcoma ransomware group?

Sarcoma 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 Advanced Accounting & Business Advisory breach?

Sarcoma published data attributed to Advanced Accounting & Business Advisory (~115 GB). Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Advanced Accounting & Business Advisory

Claimed by Sarcoma · listed 2 years ago

115 GB

Data size

21m

Age

since listed · data leaked

Status timeline

ListedOct 9, 2024
Data leakeddate unknown

At a glance

Group: Sarcoma
Status: Data leaked
Country: New Zealand
Sector: Business Services
Listed on leak site: Oct 9, 2024
Data size: 115 GB

About the victim

AI dossier — public-source company profile

Advanced Accounting is a New Zealand-based accounting and business advisory firm located in Feilding, Manawatū. They provide accounting, tax, business planning, farm accounting, and business development services to small and medium-sized enterprises across various industries.

Industry: Accounting & Business Advisory Services
Address: 109 South Street, Feilding 4702, New Zealand

Attack summary

Severity: high — Confirmed exfiltration of 115 GB from an accounting firm handling sensitive client financial, tax, and business data. The volume and nature of data (financial records, tax information) represents significant exposure of regulated business information affecting multiple clients.

The Sarcoma group claims to have exfiltrated 115 GB of data from Advanced Accounting. The leak post indicates data has been published but provides no specific details on the nature of exfiltrated files or whether encryption occurred.

high

Data the group says was taken

AI dossier — extracted from the leak post

Client financial records
Tax documents
Business planning files
Farm accounting data
Client communications

What the group claims

Helping passionate Business Owners achieve their goals doing what they love! What makes us different? We value our relationships with you. Working within a wide range of industries, whether you’re doing business in your gumboots or in the boardroom, we’re eager to help you set and reach your goals. Not everybody gets as excited about numbers as us, that’s why we’re here. You take care of your business and we’ll account for the numbers. We’re not going to try to impress you with flashy lingo, if you just want to hear it in plain English, then we’re happy to talk your language. Advanced Accounting’s diverse team brings a lot to the table so we’ve got the experience needed to understand your particular business. We take into account your needs and tailor a package that’s perfectly balanced for you.Geo: New Zealand - Leak size: 115 GB Archive - Contains: Files

Sources

Victim siteadvancedaccounting.co.nz

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 Sarcoma

Sarcoma is a relatively new ransomware group that emerged in October 2024, operating with apparent financial motivations and demonstrating a broad international targeting approach with at least 140 documented victims across multiple countries and industry sectors. The group's origin and affiliations remain unclear due to its recent emergence, with no publicly documented connections to established ransomware families or confirmation of whether they operate as an independent entity or through a Ransomware-as-a-Service model. Limited public information is available regarding Sarcoma's specific attack methodologies, initial access vectors, or technical capabilities, though their targeting patterns suggest opportunistic rather than highly selective victim selection across diverse industries including manufacturing, business services, agriculture and food production, and technology sectors. The group has shown a particular focus on victims in the United States while also maintaining operations against targets in Italy, Canada, Germany, and Australia, though no specific high-profile attacks or record ransom demands have been publicly documented by major security firms or law enforcement agencies. Given the group's recent emergence in late 2024, Sarcoma appears to remain active with no reported law enforcement disruptions or confirmed rebranding activities at this time. The group has been linked to 150 public disclosures across our corpus. First observed on a leak site on October 9, 2024; most recent post May 12, 2026. The operation is currently active.

Also tracked as: Sarcoma Ransomware Group.

Timeline of this disclosure

October 9, 2024Advanced Accounting & Business Advisory listed by Sarcomaon the group's public leak site

Data size: 115 GB

Other recent disclosures by Sarcoma

Sarcoma has been linked to 150 public victims on Darkfield. A sample of the most recent:

See the full Sarcoma dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Advanced Accounting & Business Advisory is reported in New Zealand, a country with 11 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Sarcoma means Advanced Accounting & Business Advisory 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, CERT NZ (New Zealand), as required for your jurisdiction.
Monitor for the data appearing on Sarcoma'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.