Hackers breached the computer systems of Internet services provider Web.com Group and stole credit card information of 93,000 customers.
According to a website set up by the company to share information about the incident, Web.com discovered the security breach on Aug. 13 as part of its ongoing security monitoring.
Attackers compromised credit card information for around 93,000 accounts, as well as the names and addresses associated with them. No other customer information, like social security numbers was affected, the company said.
According to the company, the verification codes for the exposed credit cards were not leaked. However, there are websites on the Internet that don't require such codes for purchases.
Web.com has notified affected customers via email and will also follow up with letters sent through the U.S. Postal Service. Impacted users get to sign up for a one-year free credit monitoring service.
The company did not specify how the intruders gained access to its systems, but has hired a "nationally recognized" IT security firm to conduct an investigation.
Web.com provides a variety of online services, including website and Facebook page design, e-commerce and marketing solutions, domain registration and Web hosting. The company claims to have over 3.3 million customers and owns two other well known Web services companies: Register.com and Network Solutions.
Register.com and Network Solutions customers were not impacted by this breach unless they also purchased services directly from Web.com.
"You should keep a close eye for any suspicious or unusual activity on any credit/debit cards that you may have used with Web.com," the company told customers. "We advise you to monitor your own credit reports through Equifax, Experian, and/or Transunion."