Location data that maps our movements is increasingly ubiquitous and increasingly open. This data has important benefits to society and our planet, but also carries risks that need to be carefully mitigated to protect the safety of vulnerable populations. OpenStreetMap is used to help understand the privacy risks of trip data, and in many cases, to remove those risks. This talk will discuss how I have been using OpenStreetMap to collaborate with organizations through security disclosures that safeguard user privacy when location data is opened to the public.