MasTec Reports Data Breach to Maine Attorney General

MasTec, Inc., a major infrastructure construction and engineering company, has formally notified the Maine Attorney General's office about a recent security incident. The filing, dated June 5, 2026, confirms that unauthorized access occurred within their systems, leading to a data breach.

This notification means that if you received a letter from MasTec, your personal information was stored on the affected network. The company is informing individuals whose data may have been exposed during the incident, as required by law.

While the public filing indicates that an investigation into the scope and impact of the breach is currently underway, the specific types of information involved were not detailed. Additionally, the number of individuals affected by this security event has not been specified in public records at this time.

To protect yourself, it is advisable to remain vigilant for any unusual activity across your online accounts. Consider changing passwords for accounts connected to MasTec's services and review financial statements for any unauthorized transactions. Be cautious of unsolicited communications, especially those asking for personal details.

Monitoring your credit reports and placing a fraud alert or security freeze can also add layers of protection against potential misuse of your information. These general steps can help detect and prevent identity theft following a data security incident.