Milliman Solutions Breach

Date: May, 2023

Milliman Solutions is a Seattle, Washington-based company that works with insurance providers to offer them risk assessments. The organization compiles data about individuals and uses that data to explain whether an individual is high-risk or not. With over 9,000 employees at 59 locations, this company manages many individuals and handles a huge amount of personal and medical information for insurance customers. The company is charged with protecting the information from many of these companies.

What Was the Breach?

  • Social Security Numbers
  • First Name
  • Last Name
  • Additional Personal Information

How Did the Breach Occur?

This Milliman Solutions breach occurred when the MOVEit file transfer tool was attacked near the end of May 2023. When a serious vulnerability was discovered in that tool, allowing databases connected to it to be attacked, information managed by Milliman was lost along with data for more than 130 additional companies. The lost data included significant personal information that could lead to serious security vulnerabilities.

When Did This Breach Occur?

The Milliman data breach occurred near the end of May 2023. At that time, consumer data for a huge number of customers was stolen and secured by attackers for later use.

Who Does the Breach Impact?

This Milliman data breach impacts insurance customers that have their data analyzed by Milliman Solutions. These customers work with a range of different insurance companies when attempting to attain insurance coverage. Anyone that receives a notice from Milliman Solutions about the data breach has confirmation their data was involved in the breach. An estimated 1,280,823 customers were involved in this breach overall.

How Many Files Does the Breach Affect?

This breach impacts a large number of documents, spreadsheets, and individual files. We don't know the total number of Milliman files involved, but we suspect it's thousands of documents.

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