They mentioned "other groups", so I'm guessing another rogue organization. Possibly others using bionics? Interesting, and personally - I like this type of mystery / conspiracy in shows, if it's done well - and so far, so good.
The original BW - Sarah - didn't she mention something about someone tapped into her brain and made her do the things she did? Or was she just lying? hmmmm I definitely hope Sarah stays around for a while, and I hope they keep her as a villain and not someone being used against her will ... there's potential here.