    ntence + It's a task that would challenge éven the sharpest of  computer geeks : set up a hacker proof computer netwark for  190,000 government workers across the countiy fighting terrorism         nitence 2: [t would bé-a daunting challenge-for éven the sharpest  fogramming wizards : set up a secure computer netiork for the  190,000:workers in the Homeland Security Department