Mack Energy Data Breach Lawsuit Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Mack Energy Corporation data breach.

If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.

About Mack Energy Corporation

Mack Energy Corporation focuses on the exploration, development and production of oil and gas. Founded in 1988 by Mack C. Chase, the company is headquartered in Artesia, New Mexico, and operates primarily in southeastern New Mexico and West Texas.

The company and its affiliates employ over 900 people and maintain a portfolio of oil and gas properties according to LinkedIn.

What Happened?

In July 2025, Mack Energy Corporation fell victim to a ransomware attack carried out by the group Cicada3301. The group claimed to have obtained 3.1 terabytes of the organization’s data and announced their intent to publish it within 19 to 20 days.

Sample screenshots were posted on their dark web portal on July 9, 2025.

The breach was disclosed to the Texas Attorney General’s office on Nov. 7, 2025. According to the official report, 413 people in Texas were affected. The company notified affected consumers by U.S. Mail.

Information Types Exposed:

• Name of individual
• Social Security Number Information

If you received a notification from Mack Energy or suspect your information may have been compromised, it is important to understand the potential impact.

Your Rights and Next Steps

If you were affected by the Mack Energy data breach, you have rights under state and federal law. Companies that collect and store personal information are required to protect it. When they fail to do so, affected individuals may be entitled to remedies, including compensation for damages such as identity theft, credit monitoring costs, and emotional distress.

Here are some steps you can take if you believe your information was exposed:

1. Review any notification letters or emails you received from Mack Energy Corporation.
2. Monitor your credit reports and financial accounts for any unusual activity.
3. Consider placing a fraud alert or credit freeze with the major credit bureaus.
4. Keep records of any suspicious activity or costs incurred as a result of the breach.
5. Learn about your legal options. Lawyers are ready to help you determine if you are eligible to join a class action lawsuit or seek compensation.

Taking these steps can help protect your identity and ensure you are prepared to act if any issues arise.

You May Be Entitled to Compensation

If your personal information was compromised in the Mack Energy data breach, you may be able to recover compensation for losses or damages. Lawyers are ready to help affected individuals understand their rights and pursue claims against Mack Energy Corporation.

To find out if you are eligible to join a lawsuit and seek compensation, complete the below form.

Sources

• Texas Attorney General
• Dark Web