Data Breach Law Group Investigates the MasTec Data Breach
By Data Breach Law Group | Posted on June 5, 2026 · South Carolina
Miami, FL — Data Breach Law Group is investigating a data breach involving MasTec, reported to the South Carolina Attorney General on June 5, 2026. The firm is reviewing whether affected individuals have legal claims arising from the incident.
MasTec is a prominent infrastructure construction and engineering company that provides services for the energy, utility, and communications sectors. Due to the nature of their operations, the company typically collects and maintains sensitive personal information, including employee payroll records, subcontractor tax documentation, and project-related contact details. In 2026, MasTec officially reported a data security incident to the South Carolina Attorney General, confirming that unauthorized access to their systems occurred. If you have received a formal data breach notification letter from the company, it indicates that your personal information was stored within their systems at the time of the incident. This notice is intended to inform you of the event and provide guidance on the steps you should take to protect your identity and financial security.
If you were affected
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.
Did you receive a letter from MasTec?
A case review is free and confidential. Tell us about your letter and we will explain your options.