Company says breach affected its ability to fulfil customer orders and is expected to cause further interruptions

United Natural Foods Inc one of the largest U.S. grocery distributors whose clients include Whole Foods, took certain systems offline in recent days after the discovery of unauthorized activity on internal networks,

United Natural Foods, Inc. (UNFI) is Amazon's primary distributor for Whole Foods. The decision to shut down IT systems may be a sign that the company is dealing with a ransomware attack.