"Four of the seven surviving (Echo Mirage) members went into the private sector." Roper and Eld were two of them; Erica Rutledge may or may not have been a third. As Chief of Hardware, it doesn't automatically follow that she was a hacker. Consider especially that the 'members' died while in contact with the Crash Virus, and therefore must have consisted specifically of the 32 who survived (relatively sanely) the full-immersion 'boot camp'. The 'official membership' of a team like EM would have been the hackers themselves, with what would have had to have been a massive support team behind them - technicians, computer programmers, biomonitors, physicians, psychiatrists, the whole nine yards. (I have the Wyrm as having been a 'bridge' programmer/researcher for the backup group, someone concerned with the psychology of the actual 'Echo' virus-hunting team.)
However, I can very easily see Samantha Villiers as having stayed in the military instead of waving 'sayonara' ...