Cushman and Wakefield Confirms Data Breach Impacting Over 310,000 Accounts

**Executive Summary:** The ShinyHunters syndicate breached Cushman & Wakefield in early May 2026 using vishing and extortion tactics, then published a dataset of 310,400 corporate identity records (employee emails, client/partner contacts, phone numbers, job titles and addresses), creating a high risk of targeted spear-phishing, business email compromise, and fraud against the firm and its contacts.