Steel Warehouse Co. Data Breach Exposes Social Security Numbers

Steel Warehouse Co. LLC, a family-owned steel processor and distributor headquartered at 2722 Tucker Drive in South Bend, Indiana, disclosed a data breach.

Cactus, a ransomware group, claimed responsibility for the breach on the dark web on Feb. 24, 2025. The attackers allegedly obtained 679 GB of data which included personal identifiable information, confidential corporate data, customer information, financials, employee and executive personal data and corporate correspondence.

The breach was reported to the Massachusetts Attorney General, the Texas Attorney General and to the Vermont Attorney General on April 30, 2026. At this time, the total number of affected individuals remains undisclosed, although 439 Texas residents were confirmed to have been affected.

As of the current public disclosure, the data breach was confirmed to have resulted in the exposure of names, Social Security numbers, addresses, driver's license numbers, government-issued ID numbers such as passports, dates of birth, and financial information such as credit/debit card numbers.

Steel Warehouse's response to the breach

Steel Warehouse is notifying affected individuals about the incident. Based on the information currently available in the regulatory filing, it has not been confirmed whether Steel Warehouse is offering free credit monitoring or identity theft protection services to affected individuals.

Individuals with questions about the breach can reach Steel Warehouse by phone at 800-348-2529 or 574-236-5100.

Because of the sensitive nature of the information involved in this breach, affected individuals may also want to take preventative steps on to protect themselves from identity theft and fraud.

Steps to take if your information was exposed

• Place a fraud alert on your credit file. Contact one of the three major credit bureaus, Equifax at 1-800-525-6285, Experian at 1-888-397-3742 or TransUnion at 1-800-680-7289, and that bureau will notify the other two.
• Consider placing a credit freeze. A credit freeze prevents new accounts from being opened in your name and is free to place and lift with each of the three major credit bureaus.
• Request and review your free credit reports. Visit AnnualCreditReport.com to check your reports from Equifax, Experian and TransUnion for any accounts or inquiries you do not recognize.
• Monitor your financial accounts closely. Review bank and credit card statements regularly for any unauthorized charges or withdrawals, and report suspicious activity to your financial institution right away.
• File your tax return early. Submitting your tax return as soon as possible each year can help prevent someone from using your Social Security number to file a fraudulent return and claim your refund.
• Be cautious of phishing attempts. Scammers may send emails, make phone calls or send text messages that reference the Steel Warehouse data breach by name to try to trick recipients into sharing more personal information.