Japan
JPN
DDoS attack degrades Mizuho online banking
On 31 December 2024, Mizuho Bank experienced a DDoS-related surge of external traffic that made Mizuho Direct and related online services intermittently difficult to access between approximately 07:00 and 10:00. Mizuho reported no customer-information leakage or malware infection associated with the incident.
65
Estimated severity
65 / 100
88
Source reliability
88 / 100
Approximate Date
31/12/2024
Targeted Company
MIZUHO BANK
Targeted Company Supply Chain Impact
Distribution & Fulfillment
Procurement & Sourcing
Production & Manufacturing
Sales (Retail & Ecommerce)
Warehousing
Service Delivery
Unrecognized Impact
Supply Chain Relations
No information
Geographic Impact
Country Targeted Company
Other Affected Countries
No other affected countries reported
Target country
Japan
Affected countries
Japan
Impacted regions
No information
Operational Impact
Duration
0.13 days
Financial impact (USD M)
No information
Impact types
Service degradation
Affected sectors
Finance & Insurance
Affected departments
Information Technology
Attack Profile
Attack types
Distributed denial of service
Attributed threat actors
No information