The ransomware attack, reported on Monday, forced the company to halt production at most of its 30 factories nationwide, including those producing it signature mass-market lager Asahi Super Dry. The closure of Asahi’s domestic breweries means it could exhaust its inventory of Super Dry in two or three days, the Financial Times claimed in a report on Thursday. As the crisis entered its fifth day, supermarkets and other retailers were bracing for empty shelves, while izakaya pubs serving draught and bottled Super Dry could be forced to switch suppliers or see their customers go without their regular beer. The company, which has reported the incident to the Tokyo metropolitan police departments, said no customer data had been compromised in the attack. The disruption means Asahi is unable to process or deliver orders of food and drink, while its customer service desks have been suspended, the Kyodo news agency said.