This page documents a data breach listing tracked by Breach House. It summarizes the
publicly advertised leak attributed to Database World ROC,
including the affected entity, origin and the date the listing was first indexed.
Breach Overview
Marcus & Millichap, Inc. Lesk In April 2026, the commercial real estate brokerage firm Marcus & Millichap was named as one of multiple alleged victims of the ShinyHunters hacking and extortion group. Data alleged to have been obtained from the company was subsequently released publicly and included 1.8M unique email addresses, along with names, phone numbers and employment-related information including employer, job title and physical company address. In their disclosure notice, Marcus & Millichap advised that data which may have been accessed appeared limited to "company forms, templates, marketing materials, and general contact information".
Dark Web Exposure
Cross-referenced against HaveIBeenRansom's dark-web index of ransomware leaks, breaches & infostealer logs.
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