A lot of software today have some kind of Surveillance and Tracking. Sometimes it's called Targeted Advertising or Telemetry, but regardless of the name or reason of the Surveillance, all of it is malicious.
This comment thread is for people to document various implementations of this malicious feature.
"You know they are listening to us this very moment?" - said Jake to Tom on a party one night. "What are you talking about?" - Tom was obviously confused. So Jake had to continue - "You know the Facebook app and the Google app on your phone is constantly recording what we have to say to each other, forming an opinions on us. They claim it's for advertising. But they can use it for anything they want. You know?". Tom looked at Jake with a slight smile. He knew he had a very good comeback. After a short pause Tom said - "I use a dumb phone." - and went into the party. But Jake didn't stop feeling bad. Jake didn't use no phone at all.