MasTec, Inc. data breach

Clerk's notes

MasTec, Inc., a leading North American infrastructure construction firm, has formally reported a security incident to the Maine Attorney General’s office on June 5, 2026. Due to the company's extensive operations and large workforce, MasTec manages substantial volumes of sensitive personal data for its employees, subcontractors, and field personnel.

This breach reportedly exposed a range of critical personal information. The affected data categories include Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Mailing Address, and Phone Number. The combination of Social Security Numbers and direct deposit details poses a significant risk for identity theft, financial fraud, and unauthorized account access.

Enterprises like MasTec, Inc. are legally obligated to safeguard the personal information they collect and maintain. This responsibility requires implementing robust cybersecurity measures and administrative controls to prevent unauthorized access. The occurrence of such a data breach raises questions about whether these protective measures were adequately in place and functioned as required.

Receiving a data breach notification letter from MasTec indicates that your personal information was compromised. This notification establishes your standing to seek legal remedies. You do not need to wait until you experience actual financial losses or identity theft; the increased risk of future harm and the necessary steps to protect yourself are valid concerns. Our firm is currently reviewing potential class action claims related to this incident. There are no out-of-pocket costs to you unless we successfully recover compensation.

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