Sony has made a promised “Welcome Back” promotion available to PlayStation Network users who lost access to the company’s online gaming service. The promotion is available to any member who’d signed up for services prior to the April 20 outage. Sony has pegged the price tag for the data breach at about US$170 million. The company is struggling to repair its public image after taking a serious beating over the past two months at the hands of hackers. Sony began restoring the PlayStation network in the U.S. in mid-May, nearly a month after the outage.”]