A ransomware attack on Panasonic Corp.-owned supply chain management company Blue Yonder Group Inc. caused disruptions and delays in the U.K. and U.S.The attack was detected on Nov. 21, and Blue Yonder has provided updates on its website, but without much detail.Blue Yonder is working with external cybersecurity firms to restore systems safely, with no timeline for restoration at this point.The outage has impacted grocery chains in the U.K. and affected companies in the U.S., including Starbucks, Proctor & Gamble, and Albertsons.