MasTec
Disclosed Jun 5, 20263 months ago25,220 affectedConfirmed
What is known
| People affected | 25,220 (as reported by the organization) |
|---|---|
| Disclosed | Jun 5, 2026 |
| Discovered | Apr 23, 2026 |
| Happened | Aug 9, 2025 |
| Attack | Not stated |
| Data exposed | Social Security numbers, Payment cards, Financial, Dates of birth, Addresses, Names |
| Sector | Other · US |
| Status | Confirmed |
Sources
| Source | |
|---|---|
| Texas Attorney General data security breach report BR-0005098: MasTecoag.my.site.com · Official notice | Official notice |
| Vermont Attorney General breach report: MasTecago.vermont.gov · Official notice | Official notice |
| Indiana Attorney General 2026 data breach report: MasTecin.gov · Official notice | Official notice |
Notices filed
| Where | Filed | People |
|---|---|---|
| Vermont AGresidents of VT | Jun 5 | 8 |
| Indiana AGresidents of IN | Jun 5 | 54 |
| Texas AGresidents of TX | Jun 9 | 4,827 |