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Japanese technology multinational company Casio has revealed that threat actors may have successfully stolen data from its systems.
Last week, Casio announced that it detected unauthorised activity on its systems on 5 October, resulting in a system failure.
While the threat actor behind the incident was initially unknown, the Russian threat group Underground, which appeared for the first time only a few months ago, claimed the incident on its dark web leak site, saying it had stolen 204.9 gigabytes of data.
Now, in a statement on its website, it said that personal data may have been leaked.
“We are still conducting an investigation, with the assistance of outside security experts, to determine the information on the company and its affiliated companies that may have been leaked and the scope of the impact, etc.,” said Casio in its latest statement.
According to the company, stolen data includes personal employee information, personal information of business partners of Casio and its affiliate companies, personal information of temporary, contract and interviewed potential employees, information of some customers who used Casio and affiliate company data and “part of personal information of a part of the employees of affiliated companies”.
It also said, in line with Underground’s claims, that data relating to contracts, invoices, sales and more with current and past business partners and its affiliates, as well as other internal documents, may have been exposed.
“All of the above cases are currently under investigation,” Casio said.
“Please be aware that there is a possibility that your personal information may be misused to send you unsolicited emails such as phishing emails or spam emails. If you receive any suspicious emails, please do not open it, and delete it.
“Please refrain from spreading this information through social media, etc., as it could increase the damage caused by the leak of information on this case, violate the privacy of those affected, have serious effects on their lives and businesses, and encourage crime.
“In the event of the sending of spam emails or related fake information, slander against those who have been the targets of the leaked information, employees of the company and its affiliated companies, or other nuisance behaviour, we will work closely with the police to respond strictly, protect the privacy and safety of all those involved, and strive to minimise secondary damage.”
It is unclear how many individuals or companies were affected. This is a developing story, Cyber Daily will provide an update as it continues to develop.
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