NEW : The resignation comes on the heels of his stepping down from News Corp. 's British newspaper publishing companies in the wake of scandals over the past year . James Murdoch says he is quitting to shield BSkyB from a newspaper scandal . NEW : News Corp. and BSkyB shares both fall on the news . Murdoch has been hammered by scandal at the now-shuttered News of the World . Comment:
NEW : James Murdoch says he is quitting to shield BSkyB from a newspaper scandal . NEW : News Corp. and BSkyB shares both fall on the news . Murdoch has been hammered by scandal at the now-shuttered News of the World . Comment: