Was Tobin & Company hit by ransomware?

Tobin & Company was listed by the WALLSTREET 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 WALLSTREET ransomware group?

WALLSTREET 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 Tobin & Company breach?

WALLSTREET published data attributed to Tobin & Company. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Tobin & Company

Claimed by Wallstreet · listed 2 hours ago

Today

Age

since listed · data leaked

Status timeline

ListedSep 25, 2026
Data leakeddate unknown

At a glance

Group: Wallstreet
Status: Data leaked
Country: United States
Sector: Financial Services
Listed on leak site: Sep 25, 2026

About the victim

AI dossier — public-source company profile

Tobin & Company is a small CPA firm based in Harrison, New York, specializing in accounting, tax, auditing, and business consulting services with a focus on nonprofit organizations.

Industry: Accounting & Tax Services
Address: Harrison, New York, US

Attack summary

Severity: medium — Accounting firm handling tax and financial records for nonprofit clients likely processes sensitive PII and financial data. Data published disclosure without proof details or clear exfiltration confirmation warrants medium severity; would escalate to high if proof or client data specifics emerge.

The Wallstreet group claims to have attacked Tobin & Company. The leak post does not specify whether data was encrypted, exfiltrated, or both, nor does it detail what data categories are at stake.

medium

What the group claims

Tobin & Company, CPA’s is a small accounting firm based in Harrison, New York, providing accounting, tax, auditing, and business consulting services, with a particular focus on nonprofit organizations.

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 WALLSTREET

WALLSTREET has claimed 5 victims and remains active as of July 2026, operating a single onion mirror. The group's limited victim count makes sector or geographic patterns unclear at this stage. The group has been linked to 24 public disclosures across our corpus. The operation is currently active.

Timeline of this disclosure

September 25, 2026Tobin & Company listed by WALLSTREET on the group's public leak site

Other recent disclosures by WALLSTREET

WALLSTREET has been linked to 24 public victims on Darkfield. A sample of the most recent:

See the full WALLSTREET dossier →

Sector and geography

This disclosure adds to ransomware activity in the Financial Services sector, which has 1,195 disclosures indexed across all operators we track. Geographically, Tobin & Company is reported in United States, a country with 3,167 ransomware disclosures in our corpus.

If your organisation is affected

A listing by WALLSTREET means Tobin & Company 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 WALLSTREET'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.