Kadokawa Corporation
Japanese media conglomerate
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| August 5 2024 | Niconico and Kadokawa's official website services were restored and went back online. |
| July 10 2024 | Kadokawa released a public statement warning that legal action would be taken against anyone disseminating leaked information from the data breach. |
| June 27 2024 | Russian-linked hacker group 'BlackSuit' claimed responsibility for the attack on the dark web, threatening to publish 1.5 terabytes of stolen business partner and user data unless a ransom was paid by July 1. |
| June 14 2024 | Kadokawa confirmed the outage was caused by a ransomware cyberattack. Attackers were observed restarting servers to spread malware, prompting Kadokawa to physically disconnect server power and communication cables. Niconico simultaneously set up a temporary website detailing the situation. |
| June 9 2024 | Kadokawa reported the cyberattack incident to the police, expert specialists, and the Kanto Local Finance Bureau. |
| June 8 2024 | A ransomware cyberattack by the Russian-linked hacker group BlackSuit targeted Kadokawa's website and the Japanese video-sharing platform Niconico, occurring on the morning of the day. |
| June 8 2024 | Connection problems reported with Kadokawa Group services including Niconico starting around 3:30 JST. Dwango stopped all Niconico services around 6:00 JST and initiated maintenance. |
| June 5 2024 | Wired published an analysis stating that ransomware attacks are 'accelerating in 2024', contextualizing the Kadokawa-Niconico cyberattack within a broader trend of increasing cyber threats. |
| June 3 2024 | Kadokawa Taiwan reported a significant cyberattack resulting in the leak of personal and corporate information, highlighting vulnerabilities in the organization's cybersecurity infrastructure. |
| June 2 2024 | Japanese Prime Minister Fumio Kishida ordered his minister to develop a bill aimed at enhancing Japan's 'active cyber defense', one day before the Kadokawa Taiwan cyberattack. |
This contents of the box above is based on material from the Wikipedia article 2024 cyberattack on Kadokawa and Niconico, which is released under the Creative Commons Attribution-ShareAlike 4.0 International License.