While more than 50 companies have expressed confidential interest in acquiring Global Crossing, their identities are no longer secret to one another, courtesy of an e-mail message from Global Crossing's lawyers. ... Bidders include Verizon, BT, Deutsche Telekom, Telefónica of Spain, Teléfonos de Mexico, CSFB, Bank One, Canadian Imperial Bank of Commerce, Quadrangle Group, the Carlyle Group, Bertelsmann, a British utility firm, ...