Every time we log on, our personal data including where we go, what we search for, who we interact with and what we buy is scraped, siphoned, collected, analyzed, categorized and monetized in the everlasting effort to design and distribute more effective, more personalized advertising. In her latest book, Cyber Privacy: Who Has Your Data and Why You Should Care cybersecurity expert April Falcon Doss examines what sorts of data are being collected, how they’re being used (to both our benefit and detriment) and what can be done to keep your digital life history from being leaked across the internet. In the excerpt below, Doss takes a terrifying look at how our infatuation with Ancestry.com and other genealogical testing services has metastasized into a means for the Border Patrol and ICE to further harass and discriminate against black and brown people in America.