SMBC Consumer Finance data leak affects up to 320,000 customers
TOKYO (Kyodo) -- SMBC Consumer Finance Co. said Thursday that personal information of up to 320,000 customers had been leaked following unauthorized a
SMBC Consumer Finance disclosed on Thursday that personal data of up to 320,000 customers may have been leaked due to unauthorized access to a loan guarantee system used by the company. The compromised details included names, addresses, phone numbers, email addresses, income levels, and contract specifics. The breach did not involve identification document images.
SMBC, a subsidiary of Sumitomo Mitsui Financial Group Inc., discovered the unauthorized access on Monday following an investigation and confirmed that the data was transmitted externally.
This incident adds to a growing list of data breaches affecting Japanese corporations. Sumitomo Mitsui Banking Corp. reported the leakage of around 227,000 email addresses, while Mitsui Fudosan Co. and a NTT East subsidiary reported breaches affecting around 133,323 and 142,126 email addresses, respectively. Monteroza Co., which operates the Shirokiya izakaya chain, and electronics retailer Bic Camera Inc. also confirmed data breaches.
Additionally, major railway companies Central Japan Railway Co., West Japan Railway Co., and Kyushu Railway Co. reported the leakage of 172,735 personal information records, including email addresses and names written in katakana, from their Shinkansen reservation services Smart EX and Express Reservation.
Cybersecurity concerns have intensified in Japan following a record 475 million instances of suspicious online activity in October, with 2.5 times the number from the previous year and an increase of about 21 million from the prior month. This surge, primarily targeting Japanese companies, has remained elevated since July, ranging from 200 million to 400 million detections each month.
Cyber Security Cloud Inc., which secures approximately 20,000 websites, attributes this increase to the growing utilization of artificial intelligence for automated cyberattacks. The company's chief technology officer, Yoji Watanabe, emphasized that unresolved software security flaws render systems more vulnerable to cyberattacks, citing a shrinking time gap between vulnerability discovery and subsequent attacks.
Written by urgent.news from The Mainichi's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
