What was exposed, when it happened, and which databases confirm it.
- accounts
- 2,719,926
- Breached
- April 12, 2026
- Last Update
- May 3, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
What happened
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".
Compromised Info
- Email addresses
- Employers
- Job titles
- Names
- Phone numbers
- Physical addresses
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- LeakCheck— linked via automatic string matching
- HIBP
FAQ
What was leaked in the MarcusMillichap breach?
The MarcusMillichap breach exposed: Email addresses, Employers, Job titles, Names, Phone numbers, and Physical addresses.
When did the MarcusMillichap breach happen?
The MarcusMillichap breach was disclosed on April 12, 2026 and affected 1,837,078 records.
Am I affected by the MarcusMillichap breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the MarcusMillichap leak.