DPD Groups‘ package tracking system has potentially been exploited to access the personally identifiable details of its clients.
DPD Group, a parcel delivery service with a global presence that ships around two billion parcels annually worldwide requires customers to track their parcels by entering a parcel code and a post code.
Pen Test Partners researchers explored the system, finding that they could try out parcel codes on API calls and retrieve OpenStreetMap addresses with the recipients position on the map.
The call only returns a screenshot of the map but it is fairly easy to derive the postcode using the street names depicted.