Engineering Firm MasTec Suffers Cyberattack

Coral Gables, Florida-based engineering firm, MasTec, Inc., suffered a cyberattack last August and is now letting victims know their personally identifiable information ended up stolen in the attack..
“In early October 2025, we received reports of suspicious activity in a small portion of our computer network,” the company said in a notice to its victims. “We promptly began working with third-party cybersecurity experts to investigate and remediate that activity.”
Later on that month, the company said the investigation found an unauthorized third party gained access to a small portion of our computer network for a few days in August 2025.

Estimated Cost

Unknown at this time

Threat Source

Impacts

IT