Pa. Company Likely Used by Hackers to Hit Target

A Pennsylvania heating and refrigeration business apparently was used by hackers to gain access to millions of Target customers’ credit- and debit-card numbers, an investigation has shown.

Fazio Mechanical Services Inc., a Pittsburgh-area company, did business with Target, and internet-security bloggers now believe it was the third-party vendor through which the hackers gained access to Target’s system, The Philadelphia Inquirer reported.

Target has maintained that hackers bypassed its security through one of its vendors.

Financial information of up to 70,000 customers was compromised during the hacking incident.