Four officials familiar with the matter tell Reuters that the U.S.

Department of War and French law enforcement are investigating freezer malfunctions that hit at least 6 military commissaries in the United States in August and over 350 French supermarkets earlier in October as a cyberattack.

In both cases, freezers' temperatures were made drastically hotter, causing the food inside to spoil and even causing a fire in some freezers at French supermarkets.