Hackers last week apparently used stolen account information from a New Jersey company that provides online payroll services to target the firm’s customers in a scheme to steal passwords and other information. Morrestown, N.J. based PayChoice, provides direct payroll processing services and licenses its online employee payroll management product to at least 240 other payroll processing firms, serving 125,000 organizations. Last Wednesday, a number of PayChoice customers received an e-mail warning them that they needed to download a Web browser plug-in in order to maintain uninterrupted access to onlineemployer.com, the portal for PayChoice’s online payroll service. The supposed plug-in was instead malicious software designed to steal the victim’s user names and passwords. Unlike typical so-called “phishing” scams — which are sent indiscriminately to large numbers of people in the hopes that some percentage of recipients are customers of the targeted institution — this attack addressed PayChoice customers by name in