Personal Data Leak Monitor

Marcus & Millichap data breach

1.84M accounts from Marcus & Millichap (marcusmillichap.com) were exposed in this breach. Besides email addresses, it included employers, job titles and names.

Breach date
April 12, 2026
Accounts
1,837,078
Added to the database
May 3, 2026

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What leaked

Email addressesEmployersJob titlesNamesPhone numbersPhysical addresses

What to do now

  1. Do not tap links in emails claiming to be that service
  2. Expect scam emails that use your real name
  3. Be alert to fake delivery or unpaid-bill texts and calls
  4. Be careful with unexpected mail or visitors

Tools that help with this breach

Norton 360PaidVisit the official site →(opens in a new tab)ESETPaidVisit the official site →(opens in a new tab)

About this breach

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".

Source: Have I Been Pwned (CC BY 4.0)

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