In a few episodes, Judy has been disabled by an enemy using the deactivation switch in the back of her neck to power her down.
For an android intended for combat purposes, this is a bad design decision.
At the very least, there should be a security lock, that the switch can only be activated with a codeword/voice print or a transmission cypher key.
To prevent enemies from simply switching her off.
For example, the way it should work is that Judy can only be deactivated when a Cooper speaks the shutdown code aloud.
This would require both voiceprint recognition and knowing the code words, neither alone would be enough to force deactivate her.