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Wire · regulatory

EY Data Breach Affects Goldman Sachs and Man Group Clients

11 October 2026 · By · Wire by Fusion42

Published

11 October 2026

Topic

regulatory

◆ Sectors

Security Infrastructure

◆ Geography

United States

◆ Source

Read at big4news.com →

◆ Verified

Fusion42 · 11 October 2026 · Fusion42 review

EY experienced a significant data breach via third-party software, exposing personal and financial information of clients from Goldman Sachs, Man Group, and Tishman Speyer. The breach involved unauthorized access between March and April 2026 and has led to regulatory notifications and proposed class-action litigation in the US.

This Wire brief sits within Fusion42's coverage of Security Infrastructure.

◆ ◆ The Wire takeaway

You must tighten your security around third-party software immediately to avoid breaches that trigger costly litigation and regulatory scrutiny. EY's breach shows that your vendor risk is your biggest blind spot in protecting client data.

◆ Coverage

1 source · 11 Oct 2026

◆ Related on Wire

◆ Topics

Security Infrastructuredata-breachcybersecuritythird-party-riskregulatory-notificationclass-action-litigation