Shirasaki: ransomware; Otsuka Corporation's customer data may also have leaked

Shirasaki Corporation (Sabae, Fukui), which makes recycled toner and weed-control sheets, disclosed on 20 May 2024 that a system failure since 19 May had stopped it from receiving email and shipping orders normally. It disclosed unauthorized access on 18 June. Its findings of 2 July said its systems failed to start on 19 May and it found several servers hit by ransomware after unauthorized access by a third party. A forensic investigation found records of data sent outside, so a leak of customers' and suppliers' company names, addresses, phone and fax numbers and email addresses could not be ruled out. Otsuka Corporation, which sold Shirasaki's toner products, announced on 4 September that 8,436 of its own customer records (company names, addresses, contact names and phone numbers) may have leaked.