Edelson Lechtzin says it is investigating Kiewit data breach claims
The law firm said it is reviewing claims after Kiewit disclosed unauthorized access to an employee Microsoft 365 account and began notifying affected people.
Edelson Lechtzin LLP says it is investigating claims tied to a Kiewit Corporation cybersecurity incident that may have exposed personal information belonging to current and former employees and independent contractors.
In a release dated Aug. 26, the firm said the information involved could include Social Security numbers, driver’s license numbers and health information. Kiewit said the incident affected employees and contractors, and that the specific information varied by person.
What happened
According to notices sent to affected individuals, Kiewit detected unauthorized access to an employee’s Microsoft 365 account. The company said it then launched an investigation, retained a third-party forensic firm, notified law enforcement, forced a password reset and disabled the affected email account.
Kiewit completed its review of what information was involved and who was affected on or about July 24, 2026, according to the release. It reported the incident to the Massachusetts Office of Consumer Affairs and Business Regulation on Aug. 21, 2026, and has been notifying potentially affected individuals.
Background and context
The release says Kiewit is one of the largest construction and engineering organizations in North America. It says a breach involving worker records can raise risks for identity theft and other misuse if personal identifiers are exposed. Edelson Lechtzin says it is evaluating whether a potential class action is available on behalf of affected people.
What officials said
The release says the incident did not involve the same data elements for every person. It says the potentially exposed information may have included Social Security numbers, driver’s license numbers and health information.
Edelson Lechtzin LLP says it handles data breach litigation and other matters, and that it has offices in Pennsylvania and California. The firm also says it offers free case evaluations for people who may have been affected.
What happens next
The investigation by Edelson Lechtzin LLP is ongoing, the release says. Kiewit is continuing to notify potentially affected individuals.
Sources
Editorial note: This article was prepared with AI assistance and includes source attribution for reader review.
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