"The idea is called “obscurity” and it means taking steps to stop your personal information from being so readily available online to, well, just anyone, says Woodrow Hartzog, a professor of law and computer science at Northeastern University.
“Obscurity is really important and really powerful in the modern-day privacy debates because it’s intuitive to all of us in the way that we live our lives, but we don’t often think about it in terms of privacy,” says Hartzog, who teaches privacy and data protection law."