MasTec data breach

Clerk's notes

MasTec has submitted a data breach notification to regulators in South Carolina, with the filing officially recorded on June 5, 2026. This report indicates that an unspecified security incident occurred, potentially compromising personal information handled by the company. The investigation into the scope and impact of this breach is currently ongoing.

While the exact categories of data involved have not been publicly detailed, data breaches typically involve various forms of personal information. Recipients of a breach notification letter from MasTec should carefully read the document to understand what, if any, specific details about their data are mentioned.

For individuals concerned about their information, general protective steps are advisable. These include monitoring any accounts that could be linked to the potentially exposed data for unusual activity. Staying vigilant for unexpected communications or transactions can help identify and mitigate potential misuse of your information.

At this stage, the incident remains under active investigation by MasTec. The regulatory filing in South Carolina serves as an official record of the reported event, marking its place in the public docket of data security incidents.

If you have received a data breach notification letter from MasTec, you may wish to discuss your situation. We offer a free, no-obligation case review to help understand what options might be available to you. Please note that submitting your information for a review does not create an attorney-client relationship and does not guarantee any specific outcome.

If a notification letter about this breach reached you, see every SC data breach on file or browse all cases.