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Marcus & Millichap data breach1.8M accounts compromised on 2026-04-12
Verified
Marcus & Millichap (marcusmillichap.com) was the source of a data breach dated 2026-04-12, exposing 1,837,078 accounts. The details below are mirrored from Have I Been Pwned and reflect the source's account of the incident at the time of publication.
Incident Report
| Target Organization | Marcus & Millichap |
|---|---|
| Source Name | MarcusMillichap |
| Domain | marcusmillichap.com |
| Breach Date | 2026-04-12 |
| Added to HIBP | 2026-05-03 |
| Accounts Compromised | 1,837,078(1.8M) |
| Data Exposed | Email addressesEmployersJob titlesNamesPhone numbersPhysical addresses |
| Status | Verified by HIBP |
Description
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".
Disclaimer
HackerFeeds does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.