The home improvement chain also said the malware responsible for the breach has been removed from all stores.
Toys 'R' Us led Internet Explorer tests and tied three others for the Firefox lead.
Toysrus.com had the best availability score for Internet Explorer testing among large retailers tested in February, says Compuware Gomez. The retailer posted 99.97% availability in Internet Explorer tests. Amazon.com, Apple.com, Toysrus.com and Williams-Sonoma.com led Firefox availability tests at 99.99%.
Gap.com, OfficeMax.com tied in second place behind Toyrus.com in Internet Explorer tests with 99.96% availability. Newegg.com came in fourth at 99.95% availability and Sears.com placed fifth at 99.94%.
With a 99.97% availability score for February, OfficeMax.com finished fifth in Firefox testing, following Amazon.com, Apple.com, Toysrus.com and Williams-Sonoma.com. Overstock.com and Sears.com tied for sixth at 99.96%.
The average Internet Explorer availability score among the 22 retailers measured in February was 99.69%. The same group of retailers produced an average Firefox score of 99.74%.
Availability is determined by the percentage of tests in which the retailer’s web site loads correctly.
Click here for the full test results.