In this particular case, because criminals can hack Flock's databases. You can tell whether I'm leaving to go to work, coming home for lunch, figure out my patterns, and schedule a robbery. There are PLENTY of other reasons why I don't appreciate having a camera sitting at the end of my driveway, I wasn't notified about their decision nor had any input so it feels a bit intrusive, but surely you can appreciate that no system is 100% secure and that's why these persistent surveillance gear are so troubling.