Daiwa shares fall after vendor hack may expose data of 110,000 clients
On Monday, Daiwa Securities disclosed that unauthorized access to servers operated by external vendor Scala Communications may have resulted in the leak of information on up to 110,000 clients. The breach, which includes clients' names, email addresses, and securities account numbers, prompted Daiwa to erase earlier gains and lose about 1% in afternoon Tokyo trading.
The total number of records potentially exposed may reach 220,000, but the leaked data is deemed insufficient to access securities accounts or conduct online trading. Daiwa's own systems were not breached; the unauthorized access occurred at Scala's servers. Scala notified Daiwa after discovering the intrusion, and the vendor has since implemented emergency security measures.
Daiwa is now investigating the incident and assessing the extent of the exposed information. This breach adds to a series of cybersecurity incidents affecting Japanese companies, such as Yamato Holdings and Sakura Internet, and comes amid South Korean authorities' orders for financial institutions to conduct security checks following recent data breaches.
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