Arnold Oil Data Breach Affects 866 People: Full Details

Arnold Oil Company of Austin, L.P., a regional supplier of automotive products and services, experienced a data breach. On or around Jan. 22, 2025, the company discovered suspicious activity on its network. An investigation determined that the network was subject to unauthorized access between Jan. 20, 2025 and Jan. 22, 2025.

The data breach affected the personally identifiable information (PII) and protected health information (PHI) of current and former employees and other individuals involved with Arnold Oil Company. Compromised information includes names, dates of birth, driver's license or state ID numbers, Social Security numbers, health insurance information and medical information.

Arnold Oil began notifying affected individuals on Aug. 15, 2025. The company disclosed the data breach to the New Hampshire Attorney General's office on Aug. 15, 2025 and the Texas Attorney General's office on Aug. 18, 2025.

The total number of affected individuals has not been released, but includes at least 865 Texas residents and one in New Hampshire. The exposure of both PII and PHI indicates a severe cybersecurity incident, as exposed information can be used for identity theft, financial fraud or unauthorized access to medical benefits.

Arnold Oil Company's response

In addition to required state and federal disclosures, the company is offering 12 months of free TransUnion Cyberscout credit monitoring and identity protection services to affected individuals.

If you receive a notice from Arnold Oil Company about this breach, you may want to:

• Sign up for the free Cyberscout credit monitoring and identity protection services, offered by the company.
• Monitor your credit reports and financial accounts for any unusual activity.
• Be alert for phishing emails or phone calls that may use your exposed information.
• Consider placing a fraud alert or credit freeze with major credit bureaus.

More information about the company can be found on the Arnold Oil Company website.