Stanford quantifies the privacy-stripping power of metadata
5 years or so ago I was on a jury once concerning sexual misconduct, and spent a good hour or so in the deliberation scanning the submitted call records, looking for gaps in correspondence between the two relevant phone numbers. It was pretty easy to identify moments when the two parties were together, that's when they stopped texting, and checked they that matched up with all of the testimonies. They did, and it solidified a guilty verdict with my fellow jurors (sans one, on one count, but we had 7 already).