Episode 35 of "Numb3rs"
s02e22 Backscatter
Title: Backscatter
Original Air Date: 05/05/2006 on CBS
Plot Outline:
Don and his family are in danger when they become the targets of the suspects Don and the team are investigating. An FBI investigation into a computer hacking scam, which taps into a bank's system to gain access to customer's identities and financial assets, becomes personal for Don when the Russian mob spearheading it comes after him and threatens the safety of Charlie and Alan.