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Ernst & Young Data Breach Exposes Tax Information

Ernst & Young Data Breach Exposes Tax Information

Classaction July 17, 2026

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the Ernst & Young data breach.

As part of their investigation, they need to hear from individuals who had their information exposed in the incident , including those who received notice of the Ernst & Young data breach or otherwise believe they are affected.

Ernst & Young (EY), a “Big Four” accounting firm based in London with a large United States presence, has disclosed a data breach potentially impacting personal and financial information.

According to a sample notice submitted to the California Attorney General’s Office , which can be seen below, EY detected anomalous activity on the third-party information technology platform it uses to support tax-related work for clients on April 23, 2026.

After an investigation with an independent security firm, EY determined that between March 28, 2026 and April 12, 2026, an unauthorized party accessed this third-party platform and downloaded documents a number of EY clients.

A report filed with the Vermont Attorney General’s Office on July 16, 2026 relays that the EY data breach may have impacted Social Security numbers, financial account codes and credit and debit account information.

At the time this post was made, the total number of individuals affected by the Ernst & Young data breach had not been publicly disclosed.

If your information was exposed in the Ernst & Young data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, time spent dealing with the breach, out-of-pocket costs, and more.

A successful case could also force Ernst & Young to ensure they take proper steps to protect the information they were entrusted with.

Affected by the Ernst & Young data breach? Fill out the form on this page today.

If you believe your information was exposed in the Ernst & Young data breach, fill out the form on this page to get in touch with us.

An attorney or legal representative may then reach out to you to explain more this investigation and ask you a few questions.

Remember, there is no cost to get in touch, and you are under no obligation to take action after speaking to someone.

Published: July 17, 2026

The information submitted on this page will be forwarded to Bryson Harris Suciu & DeMay PLLC who has this investigation.

Extracted Entities

Attack Types (1)

Companies (1)

Countries (1)

Domains (1)