LeafData Cross License Data Modification On March 26th, 2019 LeafData suffered yet another major data-access/security issue. Retail class licensees were able to modify records of inventory from the supply-side licensee they purchased materials from. This issue became known as LW4821. Problem Details On March 26th we had scores of customers contacting our support line reporting that inventory had re-appeared. Searching through our logs we identified that tens of thousands of records had been modified within the last few hours.