1. Your digital footprint is the trail of data you leave behind through online activities like social media, browsing history, and purchases. 2. A digital footprint can impact your education, career, reputation, privacy, and safety depending on whether it paints you in a positive or negative light. 3. The article tells a story of a student named Alexandra whose life was severely disrupted after she posted an insensitive video online without considering the consequences, and how her future has been impacted by her permanent digital footprint.