Security Issues in a Satellite Global GSM Network

摘要

In 1957 the first man-made satellite announced itself to an astonished world. People everywhere instinctively realized the Historic importance and trans-national nature Of SPUTNIK. Here was something Unprecedented that all could hear on their Radio and in every region of the globe- Indeed in the night-time sky it was possible to Discern it picking its way with surprising Indifference through the ancient constellations -a man-made star-like object which promised a new era for human communications.