Web hosting company Network Solutions revealed Friday that unauthorized code was used to transfer the credit and debit card information from the e-commerce websites of 4,343 of its merchant clients to servers outside the company.
In early June, hackers broke into servers that provide e-commerce hosting and payments processing and left malicious code in their wake. The exposure occurred sometime between March 12, 2009 and June 8, 2009. The card information of 573,928 people is believed to have been compromised, according to Network Solutions. However, the company adds that whether this data was actually used is unclear since it has not received any reports of such activity.
It was revealed on a blog on Network Solutions' site that the company was actually PCI compliant, meaning it met the criteria for data safety as outlined in the Payment Card Industry Data Security Standards (PCI DSS).
Network Solutions is working with credit monitoring company TransUnion to assist affected merchants in notifying their customers of the data compromise.