Niconico security incident history
Hacking, data breaches and other security incidents involving Niconico, with related coverage.
Incidents: 1 · Most recent
Japan's Niconico hit by cyber-attack, causing outage and data leak
Impact: Service outage and data leak
Japanese video-sharing service Niconico suspended its service after a large-scale cyber-attack. The outage continued and the service was expected to remain offline until July. A data leak resulting from the attack was later confirmed.
Related reports: 5 · last report →