An important look at how 50 years of American privacy law is inadequate for today’s surveillance technology, from acclaimed Ars Technica senior business editor Cyrus Farivar.

Until the 21st century, most of our activities were private by default, public only through effort; today, anything that touches digital space has the potential (and likelihood) to remain somewhere online forever. That means all of the technologies that have made our lives easier, faster, better, and/or more efficient have also simultaneously made it easier to keep an eye on our activities. Or, as we recently learned from reports about Cambridge Analytica, our data might be turned into a propaganda machine against us.