Eurest @ Wolfspeed

Official wording

Food not protected during storage, preparation, display, transportation and service, from potential sources of contamination (e.g., food uncovered, mislabeled, stored on floor, missing or inadequate sneeze guards, food containers double stacked)

In plain English

Food was stored or handled in a way that could let germs or other material get into it, such as raw meat stored above ready-to-eat food or uncovered food. Cross-contamination is a common cause of foodborne illness.