sleep $(( 1 + $RANDOM % 5 ))

Needs a 99% print too just before the 5 second sleep. Followed by a 99.9% and another 2 second sleep. Never print 100 and just run a traceroute in a loop.

Followed by a "we're in" from the hacker as we're made to believe he's reading the console spam like he's Neo from the matrix as he types faster and faster into an unresponsive terminal window.