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6.5 — HIGH

EY says client tax data exposed in third-party IT software breach

📅 17 July 2026 at 10:47 UTC📰 Cyber InsiderView original source ↗
EY says client tax data exposed in third-party IT software breach

Ernst & Young (EY) is notifying affected individuals that personal and financial information was exposed after attackers breached a third-party IT service management platform used by the firm's tax practice. The professional services giant says the incident resulted in unauthorized access to documents belonging to multiple tax clients, though it has not found evidence that … The post EY says client tax data exposed in third-party IT software breach appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A third-party IT service management platform used by EY's tax practice was breached, resulting in unauthorized access to documents containing personal and financial information of multiple tax clients.

⚙️Technical Details
Affected Systems
third-party IT service management platform
Attack Vectors
anomalous activity involving the platform
💥Impact Assessment
Severity: high
Who Is at Risk
individuals whose documents were stored on the breached platform
🛡️Recommended Actions
1Review financial accounts for suspicious activity
2Change passwords and security questions if fraud is suspected
3Consider additional protections such as fraud alerts or security freezes with major credit bureaus
📦Affected Products
third-party IT service management platform used by EY's tax practice

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