Edelson Lechtzin Investigates Ernst & Young Data Breach Claims

Edelson Lechtzin LLP has launched an investigation into potential class action claims following a data breach at Ernst & Young (EY) that compromised client tax records. The breach was revealed after an unauthorized third party accessed a support system used by EY, leading to the exposure of sensitive personal and financial information.

Ernst & Young began notifying affected clients in July 2026, after discovering the breach during an investigation prompted by anomalous activity detected on April 23, 2026. The unauthorized access occurred between March 28 and April 12, 2026, when the attacker exploited a third-party IT service management platform to download documents containing client tax information.

As a result of the breach, clients whose tax records may have been compromised are at an elevated risk for identity theft, tax fraud, and phishing attacks. The firm is currently assessing the extent of the breach and has not disclosed the number of affected clients or the identity of the third-party vendor involved.

In response to the incident, EY has taken steps to secure its systems and has informed federal law enforcement. However, it has yet to determine whether the breach specifically targeted individuals or if the exposure was more widespread.

Clients receiving notifications from EY are encouraged to monitor their accounts and consider protective measures, including placing fraud alerts and enrolling in identity monitoring services. Edelson Lechtzin LLP is offering free evaluations for those impacted by the breach to explore their legal options.

This incident highlights ongoing vulnerabilities in cybersecurity practices, particularly concerning third-party service providers. As data breaches become increasingly common, the implications for affected individuals can be significant, necessitating solid legal and security responses.

This announcement is based on information distributed via PR Newswire.

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