Hatena: following a false transfer instruction from a malicious third party, funds were sent from an employee account to outside accounts, a loss of up to about 1.1 billion yen

Transfers from the company's bank account to outside accounts were made from an employee's account. More were made on April 21. [1] [2]

It was contacted by its bank about suspicious transfers and investigated. The employee confirmed having followed a false transfer instruction from a malicious third party. [1] [2]

It announced the outflow of funds. The loss was reported as up to about 1.1 billion yen. [1] [2]

It announced the booking of an extraordinary loss and deferred tax assets and a revision of its full-year forecast. The extraordinary loss from the outflow was reported as 1.179 billion yen. [3]

It published the report of its special investigation committee. The committee found that the head of accounting followed a false remittance instruction from a malicious third party and, believing it was part of cooperating with an investigation, caused company funds to flow out. Executives also said they would voluntarily return part of their pay. [4] [5]