More than a dozen corporate giants in the retail, telecommunications, financial services, banking and technology industries are joining forces to combat phishing, spoofing and other methods of online identify fraud. On Wednesday, the companies — among them AT&T Wireless Services Inc., IBM Corp., Best Buy Co. Inc., and Fidelity Investments Inc. — will announce the formation of the Trusted Electronic Communications Forum (TECF), a group that will focus on eliminating phishing’s threat to e-mail and e-commerce. The forum has a complete listing of the companies taking part in the effort on its Web site, but few additional details were available this afternoon. Full Story