MasTec Confirms Data Breach Filing with Maine Attorney General

MasTec, Inc., a major infrastructure construction and engineering company, has officially confirmed a data security incident. The company filed a data breach notification with the Maine Attorney General's office on June 5, 2026, indicating that unauthorized activity affected its systems.

This notification is crucial for individuals who received a direct letter from MasTec, as it signifies that their personal information was stored within the company's network and could have been accessed. The specific types of data exposed in this incident were not detailed in the public filing, so it is referred to generally as 'personal information' or 'your data'.

The exact date of the breach remains unknown, and MasTec has stated that an investigation into the incident is ongoing. The filing with the Maine AG's office serves to inform affected residents about the event.

To protect yourself following this breach, it is recommended to remain vigilant for any unusual activity. Monitor your accounts for suspicious transactions and consider changing passwords for any online services that might use similar credentials. Be cautious of unsolicited emails, texts, or phone calls that request personal information.

This information is based on public records filed with the Maine Attorney General's office. DataBreachSearch.com provides this summary to help individuals verify official reports and understand the implications of such incidents, strictly adhering to the facts as reported by the filing company.