<ul data-eligibleForWebStory="false">Uploading a photo or posting content online leads to a complex system of data tracking, storage, and surveillance.Deleted data may remain in backups for months, and manual clearing of activity logs is required to prevent data retention.Instances like the Cambridge Analytica scandal illustrate the extent of data harvesting and misuse by companies like Meta.Data privacy concerns extend to brands selling data, surveillance by agencies like ICE, and the persistence of ghost data on reset devices.