Announcement: Delta Wall 2026 Cybersecurity Exercise
Overview
Against a backdrop of increasingly sophisticated and faster cyberattacks and resulting damage in Japan, the 11th exercise will be held to improve cyber resilience and incident response capabilities across the financial industry. It is scheduled for October 6 through 22, 2026, with 181 financial institutions expected to participate. The name Delta Wall derives from three perspectives—self-help, mutual assistance, and public assistance—and defense.
Key points
- The announcement states that the “Cross-Industry Cybersecurity Exercise for the Financial Sector (Delta Wall 2026)” will be held.
- This is the 11th exercise, with 181 financial institutions expected to participate.
- The aim is to further improve cyber resilience and incident response capabilities across the financial industry.
Overview
“1. Background and Purpose” states that large-scale cyberattacks have occurred around the world, and that attack methods are becoming increasingly sophisticated and faster. In Japan, attacks have also caused business disruption, theft of important information, and financial losses.
The source describes these cyber threats as a major risk that could affect the stability of the financial system.
Impact
The exercise aims to further improve cyber resilience and incident response capabilities across the financial industry.
Details
The exercise is called the “Cross-Industry Cybersecurity Exercise for the Financial Sector (Delta Wall 2026).” Delta refers to the three perspectives that are key to cybersecurity measures: self-help, mutual assistance, and public assistance. Wall derives from defense.
For details of the exercise, readers are directed to the attached materials. A telephone contact is provided, with reception hours from 10:00 to 17:00 on weekdays. General questions about financial administration and related matters are accepted by the Financial Services User Consultation Room. The telephone numbers are 0570-016811 (or 03-5251-6811 from IP phones).