MasTec data breach
MasTec appears in 5 breach notices filed with Texas AG, Vermont AG, SC Consumer Affairs, Indiana AG and New Hampshire DOJ, most recently reported on June 9, 2026.
Also listed as: MasTec, Inc.; MasTec Inc
Breach notices filed with regulators
| Reported | Filed with | Breach date(s) | People affected | Data involved | Source |
|---|---|---|---|---|---|
| Jun 9, 2026 | Texas AG | Aug 9, 2025 – Aug 16, 2025 | 4,827 Texas residents | Name of individualAddressSocial Security Number InformationFinancial Information (e.g. account number, credit or debit card number)Date of Birth | Texas AG list ↗ |
| Jun 5, 2026 | Vermont AG | Not listed | 8 Vermont residents | Social Security NumbersFinancial Account CodesCredit and Debit Account Info | Vermont AG list ↗ |
| Jun 5, 2026 | SC Consumer Affairs | Not listed | 1,160 South Carolina residents | Not listed | Notice ↗ |
| Jun 5, 2026 | Indiana AG | Aug 9, 2025 | 54 Indiana residents | Not listed | Indiana AG list ↗ |
| Jun 4, 2026 | New Hampshire DOJ | Not listed | Not listed | Not listed | Notice ↗ |
Each row is a notice as published by the agency. For state lists, the number affected counts only that state's residents; HHS lists the total reported. SEC rows are Form 8-K Item 1.05 filings, which usually don't give a count. A notice does not mean a settlement exists, and a settlement may cover a different incident than a given notice.
Is there a settlement?
We don't track an open class-action settlement for MasTec right now. Settlements usually come months or years after a breach. Get an email when new settlements are announced.
What you can do now
- Read the notice letter if you got one. It says what data was involved and may offer free credit monitoring with an enrollment deadline.
- Consider a free credit freeze at Equifax, Experian and TransUnion, especially if your Social Security number was involved.
- Change reused passwords and turn on two-factor authentication.
- Watch your bank, card and insurance statements for activity you don't recognize.
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