Duininck Companies Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating Duininck Companies, LLC regarding its recent data breach. The Duininck data breach involved sensitive personal identifiable information and protected health information belonging to an undetermined number of individuals.


Duininck is a full-service construction company specializing in a wide variety of civil construction projects. Serving government, commercial, and residential sectors, Duininck offers its customers crushing, paving, site development, and highway construction services as well as assistance with sewer and water main issues. Originally founded in 1926 by three brothers, Duininck continues to be family owned and operated. Since its founding, Duininck has expanded its operations into new fields such as mining and the production and distribution of products such as rocks, granite, sand, and dirt. Headquartered in Prinsburg, Minnesota, Duininck has 5 additional locations in Minnesota and South Dakota and employs over 200 individuals.


On December 15, 2022, Duininck discovered that it had experienced a data breach in which the sensitive personal identifiable information and protected health information in its systems may have been accessed and acquied. Through its investigation, Duininck determined that an unauthorized actor may have accessed this sensitive information between December 9 and December 15, 2022. On September 19, 2023, Duininck began contacting individuals whose information may have been impacted. The type of information exposed includes:

  • Name
  • Social Security number
  • Driver’s license number
  • Address
  • Financial information
  • Medical information
  • Health insurance information

If you received a breach notification letter from Duininck Companies, LLC:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or sam@turkestrauss.com.

If you were impacted by the Duininck data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in free credit monitoring service provided by Duininck Companies, LLC;
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

Share This Post: