Symmetra

Satya Vaswani wouldn't be an easy target. Her skills with hard-light are to be reckoned with, and she's technologically-minded. Not as much as Sombra, but enough to make her a threat. Still, she does have an advanced prosthetic arm and wears a lot of hackable tech. If Sombra could get through her defenses, she'd be putty in her hands...