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Confirmed breach · 2 breaches on record

MasTec data breach

USUnited States · FL · MasTec, Inc.

MasTec (FL, United States) notified the Vermont Attorney General, the Texas Attorney General and the Indiana Attorney General of a data breach on 5 June 2026. It affected 25,220 people. Exposed: Social Security numbers, Financial account and card details, Dates of birth, Names and Addresses.

Breach reported 5 June 2026

Status
Confirmed breach
People affected
25,220 people
Reported
5 June 2026

What was exposed

  • Social Security numbers
  • Financial account and card details
  • Dates of birth
  • Names
  • Addresses

What changed since it was first reported

  1. Confirmed breach, 4,827 Texas residents (Texas Attorney General)
  2. Confirmed breach, 25,220 people (Indiana Attorney General)

Sources

Official notices are read by code from the regulator’s own register. More notices to Vermont, Texas, Indiana. · Corrections and changes

Breach reported 20 November 2023

Status
Confirmed breach
People affected
675 Washington residents (one state’s count; the total can be higher)
Reported
20 November 2023

What was exposed

The register’s list does not say what was exposed; the notice it links to (under Sources) usually does.

Sources

Official notices are read by code from the regulator’s own register. More notices to Washington. · Corrections and changes

If MasTec had your data

  1. Look for MasTec, Inc.’s own notice or letter: it should say what of yours was involved. Keep it.
  2. Call your bank on the number printed on your card (never one from a message), check recent payments and ask for a new card.
  3. An ID number cannot be changed, so lock it: a credit freeze or fraud alert in the US, a credit warning (kreditadvarsel) on borger.dk in Denmark, Cifas protective registration in the UK.
  4. Expect scams that use your details: calls, texts or emails pretending to be MasTec, Inc., your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

More breaches in United States

  1. Quantum HealthUSUnited States · OH · 28 October 2026 Social Security numbersHealth insurance detailsHealth and medical information+1 273.1KTexas residents
  2. Indico Data SolutionsUSUnited States · MA · 28 October 2026 Social Security numbersDriver’s license numbersGovernment ID numbers+6 2.1KTexas residents
  3. Apollo Asset ManagementUSUnited States · NY · 28 October 2026 Social Security numbersDriver’s license numbersGovernment ID numbers+3 1.5KTexas residents
  4. DBA Tanya AlexanderUSUnited States · TX · 28 October 2026 NamesAddresses 417Texas residents
  5. DMW Retail Enterprises LLC dba Kult of Athena (KOA)USUnited States · IL · 28 October 2026 Financial account and card detailsNames 306Texas residents

Every breach in United States →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Found a mistake? Tell us and we correct it.