Enter multiple symbols separated by commas

Target hackers broke in via...an HVAC company?!

Target logo on Target store, Chicago
Getty Images
Target logo on Target store, Chicago

Target hackers first broke into the retailer's system by using network credentials stolen from Fazio Mechanical Services, a refrigeration and HVAC systems provider, sources told security news and investigation website KrebsonSecurity.com.

Last week, Target said that the initial intrusion into its systems was traced back to network credentials that were stolen from a third-party vendor.

According to Fazio Mechanical's website, the company has also has done refrigeration and HVAC projects for specific Trader Joe's, Whole Foods and BJ's Wholesale Club locations in Pennsylvania, Maryland, Ohio, Virginia and West Virginia.

Click here to read the full story from Krebs on Security.

--By CNBC.com

Contact Retail


    Get the best of CNBC in your inbox

    Please choose a subscription

    Please enter a valid email address
    To learn more about how we use your information,
    please read our Privacy Policy.