Japanese electronics giant Casio revealed on Tuesday that a recent cyberattack caused some disruptions. 

The company said it detected unauthorized access to its network on October 5. The intrusion resulted in a system failure and led to the disruption of some services.

Casio has launched an investigation and is trying to determine whether any personal or other sensitive information has been compromised as a result of the cyberattack. 

Authorities have been notified and the company has restricted external access to its systems as part of its incident response.

While system disruptions often indicate a ransomware attack, no known ransomware group appears to have taken credit for the attack on Casio. 

This incident was disclosed one year after the company revealed that the personal information of tens of thousands of customers across 150 countries and regions was exposed in a data breach.

The incident involved unauthorized access to a server associated with ClassPad.net, an education application managed and operated by Casio. 

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