The Mack Energy Corporation Data Breach: Reported Filing Facts

Mack Energy Corporation appears to be an energy and natural resources company, likely involved in oil and gas exploration, production, and operations. In the course of managing personnel, contractors, and business operations, such companies typically collect and store sensitive personal information including Social Security numbers, payroll records, banking details for direct deposit, and government-issued identification. This data breach was officially reported to the Texas Attorney General in 2025, confirming that unauthorized parties may have accessed company systems. If you received a data breach notification letter, it indicates that your personal information was likely contained within the affected files. We recommend reviewing the letter carefully to understand the specific scope of the exposure and to take advantage of any identity monitoring services offered by the company.

State: Texas
Breach date: June 26, 2025
Reported: November 7, 2025

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Related data breach cases

Browse all Texas data breaches View the full case directory