A tool developed by MIT Media Lab analyzes the metadata from a volunteer’s Gmail account and visualizes it. The tool shows how intrusive the collection and analysis of metadata is over time, especially for those who are overly reliant on email as their main method of communication. The right to privacy means our metadata shouldn’t be collected and analyzed without reasonable suspicion that we’ve done something wrong. The data visualizations the tool spits out are even creepier since we know government metadata collection didn’t stop at Americans’ call records.”]
Source: https://www.aclu.org/blog/national-security/secrecy/my-life-circles-why-metadata-incredibly-intimate