Nearly 5.6 million people hit by massive data breach at credit check company — what you need to know
Social Security numbers, addresses, and more exposed in leak
A massive data breach at the credit check company 700Credit could affect at least 5.6 million people. Personal information, including Social Security numbers, addresses, names and dates of birth, were exposed in the leak.
700Credit is a Michigan-based company that runs credit checks and identity verification services for auto dealerships throughout the United States. The company released a statement on its website blaming a bad actor with unauthorized access to its databases.
The company said it is sending letters by mail to individuals whose data was stolen in the breach, and it is offering credit monitoring services.
According to the Michigan Department of Agriculture, Trade and Consumer Products website, this breach affects 5.6 million people. A statement from Michigan Attorney General Dana Nessel says the breach occurred between May and October 2025. It apparently wasn’t discovered until October 25.
It is important that anyone affected by this data breach takes steps as soon as possible to protect their information.
Michigan Attorney General Dana Nessel
“If you get a letter from 700Credit, don’t ignore it,” Nessel said. “It is important that anyone affected by this data breach takes steps as soon as possible to protect their information.”
According to CBTNews, an auto-dealership business-to-business publication, the hack was caused when an “integrated partner” was compromised but failed to notify 700Credit. The malicious actor was then able to infiltrate the company’s systems using a vulnerability in 700Credit’s validation process.
700Credit told CBTNews that it has strengthened its API inspections, moving to a more secure system and increased its cybersecurity insurance.
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How to stay safe after a data breach
700Credit is spending a lot of time urging dealerships to adopt best practices and prioritize education when it comes to cybersecurity. That’s not only good advice for companies, but for customers as well.
As always, when it comes to data breaches or data leaks, you’ll want to take a serious look at your security apparatus. Make sure your passwords are all updated, especially for any accounts involved in the breach.
In this 700Credit case, the company performs credit checks for auto dealerships across the country. You’ll want to change passwords to sensitive accounts like your email and financial accounts. Using one of the best password managers can help you generate and store new, secure passwords.
700Credit is offering credit monitoring services, but it’s not a bad idea to utilize one of the best identity theft protection services. These services work best if they can watch out for your personal information before an attack occurs. The statement does assert that there “is no indication of any identity theft, fraud, or other misuse of information in relation to this event.”
You’ll want to keep an eye out for phishing attempts and social engineering attacks. Be on alert for strange texts, emails or phone calls where people attempt to get you to share personal information or pressure you into clicking a link, downloading an attachment, app or going to a website.
Letters are going out this week, but if you visited a dealership in the last year and believe 700Credit ran your check, you can reach out to the company’s dedicated line (866) 273-0345 if you have questions.
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Scott Younker is the West Coast Reporter at Tom’s Guide. He covers all the lastest tech news. He’s been involved in tech since 2011 at various outlets and is on an ongoing hunt to build the easiest to use home media system. When not writing about the latest devices, you are more than welcome to discuss board games or disc golf with him. He also handles all the Connections coverage on Tom's Guide and has been playing the addictive NYT game since it released.
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