Robert Hanssen and Noshir Sheriarji Gowadia

Part 1: Robert Hanssen, the longtime FBI agent accused and convicted of passing secrets and super-secret software to Moscow is considered one of the most damming spies to American Intelligence ever. Please research who he is, what he did and how he did it. More importantly, what damage did he do to American National Security and how did it directly help UBL and Al Quada? Lastly, what was this software (name and function) he provided to Russia, what did it do?
Part 2: B2 Bomber engineer Noshir Sheriarji Gowadia was arrested for providing sensitive information to another country (among a host of other charges). Research this incident and compare the damage to U.S. National Security that Hanssen caused.