Ernst & Young is notifying customers of a data breach caused by the compromise of a third-party support ticket system used by its IT personnel.
According to the company, support tickets submitted through the platform may have included documents containing client tax information.
Ernst & Young (EY) is among the world’s four largest auditing and professional services providers, offering auditing, tax, consulting, and transaction advisory services to major organizations in more than 150 countries.
The company employs 406,000 people and reported a global revenue of $53.2 billion last year.
The breach notification to affected clients states that Ernst & Young detected anomalous activity on its networks on April 23 and initiated an investigation.
