MasTec Reports Data Incident Affecting Personal Information in SC

MasTec, a major infrastructure construction and engineering company, has officially reported a data security incident. This report was filed with the South Carolina Attorney General's office on June 5, 2026. The company serves the energy, utility, and communications sectors, and this filing acknowledges that an unauthorized party gained access to its internal systems.

The nature of the unauthorized access and the specific breach type were not detailed in the public filing. MasTec indicated that personal information stored within their systems was involved in this incident. However, the precise categories of data that may have been exposed have not been specified.

At the time of the filing, the incident remains under investigation by MasTec. If you have received a direct notification letter from MasTec regarding this event, it is confirmation that your personal information was part of the data held within their systems at the time of the security compromise.

Individuals who have been notified should take proactive steps to safeguard their privacy and financial security. It is recommended to monitor your financial accounts and statements for any suspicious activity. Regularly obtaining and reviewing your credit reports from the major credit bureaus can help detect any unauthorized accounts opened in your name.

Additionally, exercise caution with unsolicited communications, especially those requesting personal details. Phishing attempts often follow data breaches, so be wary of unexpected emails, text messages, or phone calls claiming to be from MasTec or other entities asking for sensitive information. This information is based on public filings submitted to regulatory authorities.