Just debating this very issue. Was/am considering moving from a house to apartment. Found what seemed a perfect place. As I was showing a friend the layout on their website, we scrolled to the very end & found a section entitled Tracking Policy. It says by using their provided wifi, I acknowledge that they may view by emails & postings to social media..As well as acknowledging that they may block access to sites & ability to store content that is illegal or offensive in their view. As i railed against this invasion of privacy, I was told over & over that this is common practice. However it is usually buried in all the legalize & goes unnoticed. It is also becoming a common HR practice. And a common workplace practice especially if using a device at work. Privacy is indeed an illusion. My mother use to say, if u don't want the world to read it, don't write it down.