MasTec Reports Data Security Incident to South Carolina Regulators

MasTec, a prominent infrastructure construction and engineering firm, has reported a data security incident to the South Carolina Attorney General. The official filing date for this notification was June 5, 2026, confirming an unauthorized access event within the company's systems.

According to the public filing, unauthorized access to MasTec's systems occurred, leading to a potential exposure of personal information. The specific categories of data involved in this breach were not detailed in the public record. Individuals who have received an official notification letter from MasTec are advised that their data may have been part of this incident.

It is important for anyone who receives a direct communication from MasTec regarding this incident to carefully review the information provided. These letters typically outline which individuals are affected and offer guidance tailored to the specific circumstances of the breach.

As a general precaution following any data security event, individuals should remain vigilant. Regularly monitor financial accounts and credit reports for any suspicious activity. Consider placing a fraud alert or security freeze on your credit files to prevent unauthorized access to your credit. This can help protect against potential identity theft or financial fraud.

MasTec has indicated that an investigation into the scope and impact of this data security incident is currently underway. Further details, if they become publicly available through official channels, will be updated.