Los Angeles-based TeleSign has appointed a new CFO, saying today that it has named Matthew Hardy as its new Chief Financial Officer. The firm, which provides phone-based, Internet fraud prevention and authentication services to major Internet properties, said that Hardy joins the company from LiveOffice. Hardy was most recently CFO at the firm, before the company's acquisition by Symantec. Hardy also has served at Digital Insight and Credit Suisse. TeleSign is headed by Steve Jillings.