I'll call it the HAL9000 virus.
When someone tries to use any voice-activated program ... whether Alexa, Cortana, Xfinity TV remote, {whatever} ... they get the response: "I'm sorry. I can't do that."
It's even better if the device recognizes the person talking to it.
Muahahahahahahahahahaha
Now ... how do I find a hacker on the Dark Web?