Kiewit Corporation Data Breach Lawsuit Investigation
Received an August 2026 breach notice from Kiewit?
Dapeer Law, P.A. is investigating a potential class action against Kiewit Corporation, one of North America's largest construction and engineering contractors, on behalf of individuals whose personal information may have been exposed after an unauthorized party accessed an employee's Microsoft 365 email account.
Who may qualify
You may be eligible to participate in a class action if any of the following applies:
- You received a data breach notification letter from Kiewit dated August 2026.
- Your letter offered enrollment in complimentary IDX identity-theft protection and credit monitoring, with an enrollment code and a November 21, 2026 deadline.
- You had personal information held by Kiewit, such as your Social Security number, driver's-license number, or date of birth, in connection with your employment, an application, or another business relationship.
- No proof of harm required to consult with counsel. You do not need to have already suffered identity theft to explore your legal options.
- Excluded: individuals who did not receive a breach notice and whose information was not involved in the incident.
Not sure if you qualify?
Send us your notice, we'll confirm your eligibility at no cost.
What happened
Kiewit Corporation has reported that an unauthorized party gained access to an employee's Microsoft 365 email account. According to the notice Kiewit filed with the Massachusetts Attorney General, the company responded by forcing an immediate password reset and disabling the affected account, then engaged outside counsel and a third-party forensic firm to investigate and notified law enforcement of the intrusion. Kiewit's notice does not state when the unauthorized access began or when it was detected.
Kiewit completed its review of the affected mailbox on July 24, 2026 and began mailing notification letters on August 21, 2026. The filing reported 5 affected Massachusetts residents and did not state a nationwide total. The company says the mailbox may have contained names, addresses, dates of birth, Social Security numbers, driver's-license numbers or other government-issued identifiers, and health information connected to employment, and that not all of those elements applied to every individual. Kiewit is offering complimentary identity-theft protection and credit monitoring through IDX, with enrollment closing on November 21, 2026.
Social Security numbers, driver's-license numbers, and dates of birth are persistent identifiers that cannot be changed the way a password can, and they can be used for identity theft, tax and benefits fraud, and fraudulent account openings for years after an exposure. Where health information tied to employment is also involved, the potential for misuse extends beyond financial fraud. Dapeer Law is evaluating whether Kiewit's email security practices, its account and access controls, and the timing of its notifications support claims under state data breach notification and consumer protection laws.
What to do if you received a letter
Keep your notice letter
Do not discard it. Your letter contains the IDX enrollment code, states which categories of your information were involved, and is important evidence if you decide to participate in a lawsuit.
Enroll in the free IDX identity protection
Enroll in the complimentary IDX identity-theft protection and credit monitoring offered in your letter before the November 21, 2026 deadline. Accepting this benefit does not waive your right to pursue legal action.
Place a fraud alert or credit freeze
Contact Equifax, Experian, and TransUnion to place a fraud alert or freeze on your file. Request a free weekly credit report from AnnualCreditReport.com, and use the FTC's IdentityTheft.gov recovery guide.
Speak with a data breach attorney
Consultations with Dapeer Law are free and confidential. We'll review your notice, explain your options, and advise whether you may be eligible to join a class action.
Submit your notice for a free review
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Breach timeline
Compensation you may be entitled to
Out-of-pocket expenses
Credit freezes, identity restoration services, and other costs incurred responding to the breach.
Time spent monitoring
Hours spent reviewing accounts, disputing fraudulent charges, and dealing with identity theft issues.
Identity theft & fraud losses
Unreimbursed funds stolen from accounts, unauthorized credit lines, or tax refund fraud tied to the breach.
Statutory damages
Certain state data breach and consumer protection statutes provide for fixed damages regardless of actual loss.
Injunctive relief
Court orders requiring Kiewit to implement stronger email security and data-protection practices going forward.
Compensation categories depend on applicable state law, the types of data exposed, and documented losses. No recovery is guaranteed.
Common questions
I received a data breach letter from Kiewit. What should I do? +
Keep your August 21, 2026 letter, since it contains your IDX enrollment code and identifies which categories of your information were involved. Enroll in the complimentary IDX identity-theft protection and credit monitoring before the November 21, 2026 deadline, review your bank, credit-card, and benefit statements for unfamiliar activity, and consider placing a fraud alert or security freeze with Equifax, Experian, and TransUnion. Because Social Security and driver's-license numbers may be involved, also watch for fraudulent accounts, tax filings, and unemployment or benefits claims made in your name.
Am I eligible to join a class action against Kiewit? +
Individuals who received a Kiewit breach notice dated August 21, 2026 likely qualify for a free case review. Factors that affect eligibility include your state of residence, which categories of data your letter lists, and any documented losses or time spent responding to the incident.
How much money could I receive from a class action lawsuit? +
Data breach class action recoveries vary significantly. Settlements typically range from a few hundred dollars for basic out-of-pocket losses to several thousand dollars for documented identity theft, with class size, damages, and negotiation all affecting the final amount. No payout is guaranteed, and this investigation has not yet resulted in a settlement.
What personal information was exposed in the breach? +
Kiewit's notice states that the compromised mailbox may have contained names, addresses, dates of birth, Social Security numbers, driver's-license numbers or other government-issued identifiers, and health information connected to employment. The company also states that not all of these elements applied to every individual, so check your own letter for the categories specific to you.
Did Kiewit offer free credit monitoring? +
Yes. Kiewit is offering complimentary identity-theft protection and credit monitoring through IDX. The notice letter reflects a term of either 12 or 24 months depending on the recipient, and enrollment closes on November 21, 2026. Enrolling does not waive your right to pursue a claim.
How many people were affected by the Kiewit breach? +
Kiewit reported 5 affected residents to the Massachusetts Attorney General. The filing did not state a nationwide total, and this page will be updated if additional figures are disclosed in other state filings.
Is there a deadline to take legal action? +
Yes. Statutes of limitations for data breach claims vary by state and legal theory, typically ranging from one to six years. Waiting can permanently bar your claim. Contact us as soon as possible for a free evaluation.
How do I get a copy of the official breach notice? +
The notice was filed with the Massachusetts Attorney General and a copy is available for download from the state's website, linked in the Sources section of this page. Dapeer Law can also help you obtain a copy during a free consultation.
Sources & references
- Official breach notice filing · Massachusetts Attorney General, Kiewit Corporation Breach Notice (PDF)
- Company · Kiewit Corporation (kiewit.com)
- Credit bureau freezes · Equifax · Experian · TransUnion
- Free weekly credit reports · AnnualCreditReport.com
- Identity theft recovery guide · FTC IdentityTheft.gov
Don't let the deadline decide for you. Submit your claim today.
You only have a limited window to act. Our team will review your notice, explain your options, and tell you whether you may be eligible to recover compensation, at no cost to you.
