Grocery store shoppers at many chains recently ran into an unwelcome surprise: empty shelves and delayed prescriptions. In early November, Ahold Delhaize USA was the victim of a cyberattack that significantly disrupted operations at more than 2,000 stores, including Hannaford, Food Lion and Stop and Shop. Specific details of the nature of the attack have not yet been publicly released.

Because the attack affected many digital systems, some stores were not able to accept credit/debit cards, while others had to shut down online ordering. Additionally, Hannaford’s website was offline for several days. Food supply issues have lasted several weeks in some cases, especially in the New England area, illustrating the impact cyberattacks have on people’s everyday lives.