Robert Ludlum's The Bourne Initiative

Jason Bourne is on the run. His old friend, General Boris Karpov, is dead, but lives on in the cyber weapon he devised before his death. The NSA believe Bourne has taken over the enterprise and a kill team is sent to terminate him. Flushed from cover, Bourne must unravel the mystery of Karpov's last legacy, a weaponized code that may very well bring a violent end to America…