ソニーネットワークコミュニケーションズ

So-net member database breach exposes up to about 2.59 million records; some mail passwords must be reset

Sony Network Communications’ official FAQ says it confirmed on 23 October 2026 that the So-net member database had been accessed from outside, that registered customers’ personal data had leaked as a result, and that it then took the server offline and immediately blocked the source, with no further leak confirmed after that .