Nichirei Cyberattack Leaves Japan's Frozen Food Chain on Ice

Japanese frozen food heavyweight Nichirei got hit by a cyberattack on July 13, forcing it to pull the plug on connected systems and sending ripples through the country's cold chain logistics network. Refrigerated warehouses operated by Nichirei Logistics Group and the shipping arm of Nichirei Foods both went down as a result.

Nichirei is no small operation. The Tokyo-based company sits near the top of Japan's frozen food industry, runs cold storage warehousing, and oversees around 80 subsidiaries worldwide. When it goes offline, people notice. Local media have reported disruption across restaurant chains, retailers, and delivery services.

On Thursday the company announced a phased restoration of services starting Friday, though it stopped well short of committing to a timeline for full recovery. Vague, but probably wise given the circumstances.

Investigators have confirmed that hackers specifically targeted Nichirei's servers, and that some of those servers held personal data. The company has filed an initial report with Japan's Personal Information Protection Commission on the basis that a leak cannot be ruled out. Standard procedure, though cold comfort if your data was sitting on one of those systems.

As for what actually happened, Nichirei isn't saying much. The company is deliberately withholding operational details of the attack, which means we don't yet know whether a ransomware group or data extortion outfit is behind it. No one has claimed responsibility publicly at the time of writing.

Financial impact is still being assessed. Nichirei says it will disclose anything material when it knows more. Given the scale of the disruption, that assessment could get uncomfortable.