• August 2026 •

Kiewit Corporation Data Breach

Last Updated on August 25, 2026

If your information was compromised in the Kiewit data breach, you may be able to start a class action to collect money for the harm you’ve suffered.

• Keep reading for more information

At A Glance

What's Going On?: Attorneys need to hear from people affected by the Kiewit data breach as they investigate whether a class action lawsuit can be filed.
What You Can Do: If you believe your information may have been compromised in the Kiewit data breach, fill out the form on this page to learn more about the investigation and how you can help.
Does This Cost Anything?: It costs nothing to get in touch or to talk to someone about your rights.
What Can I Get?: If filed and successful, a class action lawsuit could provide consumers with money for any harm resulting from the Kiewit breach.

Kiewit Data Breach: Lawsuit Investigation

Attorneys working with ClassAction.org are looking into whether a class action lawsuit can be filed in light of the Kiewit data breach.

As part of their investigation, they need to hear from individuals who had their information exposed in the incident, including those who received notice of the Kiewit data breach or otherwise believe they are affected.

Kiewit Security Incident: What Happened?

Kiewit Corporation, a nationwide construction and engineering organization, has reported a data breach involving the sensitive information of its current and former employees and independent contractors.

According to a sample notice sent to affected individuals, which can be seen below, Kiewit detected unauthorized access to an employee's Microsoft 365 account and thereby launched an investigation with a third-party forensic firm.

Following a review of the impacted data that concluded on July 24, 2026, the company determined that the incident may have exposed names, addresses, dates of birth, Social Security numbers, driver's license numbers, government-issued identifiers and health information provided in connection with employment. The degree of information exposed varied per individual.

The Kiewit Corporation data breach was reported to the Massachusetts Office of Consumer Affairs and Business Regulation on August 21, 2026.

What You Can Do After the Kiewit Data Breach

If your information was exposed in the Kiewit data breach, attorneys want to hear from you. You may be able to start a class action lawsuit to recover compensation for loss of privacy, lost time, out-of-pocket costs, and more.

A successful case could also force Kiewit to ensure they take proper steps to protect the information they were entrusted with.

Affected by the Kiewit data breach? Fill out the form on this page today.