Japanese tech giant Casio has suffered a cyberattack after an unauthorized actor accessed its networks on October 5, causing system disruption that impacted some of its services.

The disclosure comes from Casio Computer, the parent company of the Casio brand, widely known for its watches, calculators, musical instruments, cameras, and other electronics.

“Casio Computer Co., Ltd. confirmed on October 5 of this year that its network had been accessed by a third party in an unauthorized manner,” reads an announcement published on Casio’s website earlier today.

“As a result of an internal investigation, it was determined that this unauthorized access caused a system disruption, and some services are currently unavailable.”

The firm says no additional details can be shared with the public as long as the investigations are ongoing, noting that it is working with an external specialist to determine whether any personal data or other confidential information was stolen in the attack.

While Casio says the incident is causing service disruption, they have not specifically stated what is impacted.

Casio says it has reported the incident to the applicable data protection authorities, and measures to restrict access to external actors were promptly implemented.

BleepingComputer has contacted Casio to learn more about the incident, but a comment wasn’t immediately available.

Meanwhile, no ransomware groups have taken responsibility for an attack at Casio yet.

Roughly a year ago, Casio disclosed another data breach incident where hackers managed to gain access to the servers of its ClassPad education platform.

As a result of that breach, customer data from 149 countries were exposed, including their names, email addresses, countries of residence, service usage details, purchase information, license codes, and order details.

The latest cybersecurity incident comes at a difficult moment for Casio, as it recently informed shareholders that the company is about to incur extraordinary losses of nearly $50,000,000 due to a large-scale personnel restructuring.