Skip to content
SMBC Consumer Finance Data Breach Exposes Information of 320,000 Customers

SMBC Consumer Finance Data Breach Exposes Information of 320,000 Customers

First seen 6 Nov 2026, 03:43 UTC • •
API

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •November 6, 2026 at 03:43 UTC
  • •Unauthorized access to SMBC's loan guarantee system exposed data of over 320,000 customers.
  • •Leaked information includes sensitive personal details, but no identification images were compromised.
  • •The breach is part of a larger trend of data breaches affecting multiple Japanese companies.

On November 5, 2026, SMBC Consumer Finance reported a data breach affecting up to 320,118 customers due to unauthorized access to its loan guarantee system. The leaked data includes names, addresses, phone numbers, driver's license numbers, annual incomes, and contract details, but not images of identification documents. The breach was detected on November 2, and immediate action was taken to block access to the system. The company is working with experts to investigate the incident and assess the impact. No confirmed secondary harm has been reported, but customers are warned about potential phishing attempts. Affected individuals will be notified via email or SMS. This incident is part of a broader trend of data breaches affecting Japanese companies, including other firms linked to the email distribution service provider Arara Inc.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 3h ago How this analysis works

Timeline

2026-11-02
Unauthorized access detected
SMBC Consumer Finance detected unauthorized access to its guarantee system and blocked access immediately.
Finance.Biggo
2026-11-05
Data breach reported
SMBC Consumer Finance announced that personal information of up to 320,118 customers had been leaked.
Mainichi.Jp

More articles in this cluster (3)

Following this threat?

Track Docomo SMTB Net Bank in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed

Extracted Entities (8)

1 / 3

Common questions

What types of data were leaked?
The leaked data includes names, addresses, phone numbers, driver's license numbers, annual incomes, and contract details.
How many customers are affected?
Up to 320,118 customers may have had their personal information compromised.
What should customers do now?
Customers should be vigilant for phishing attempts and report any suspicious communications to the company.