au Kabucom Securities Co., Ltd.
Highly agile and flexible network
Deliver highly agile and flexible network for improved user experience
au Kabucom Securities Co., Ltd. is an online brokerage company and is the core company of Mitsubishi UFJ Financial Group (MUFG Group)’s online financial services.
“By using Colt for both Internet access and cyber security services, we have enabled stability in our online trading system while significantly reducing TCO. We are very satisfied with the high quality of the Colt IQ Network, which has enabled us to provide greater flexibility in terms of our operations and management, while ensuring a high performance and secure Internet environment for our customers.”
Systems Engineering, Infrastructure Team, Mr. Takahiro Yamazaki & Ms. Tomomi Takahashi
Focusing on digital transformation, innovation and diversity in an era of rapid change, the company is developing and providing cutting-edge services that thoroughly pursue convenience and stability.
Based on the idea that the most important infrastructure resource for online securities is the system, au Kabucom is the only major online securities firm that has achieved a complete in-house system development and operation. In 2018 (their 20th anniversary) , a project was launched to relocate and renovate the system infrastructure of more than 1,000 units to a next-generation data centre to further improve stability and safety. In this context, the Internet environment had to be reviewed as the basis for the online trading system for stocks and currencies for users. “By producing everything from back-office systems to front office systems in-house, we can offer unique services and achieve high management efficiency at the same time. Therefore, securing high-quality, optimal infrastructure resources was an important mission directly related to au Kabucom’s service quality,” said Mr. Yamazaki.
Connectivity overview

Why Colt
“The Internet environment that we reviewed is directly related to the environment for providing interfaces to end users, so it is essential to ensure a highly agile network to achieve a superior customer experience. The deciding factor in choosing Colt IP Access was the balance between quality and price, after comparing and reviewing multiple providers for network implementation,” recalled Mr. Yamazaki. He continued, “In terms of quality, Colt has a proven track record in the financial industry and is recognised as a top provider by the Japan Exchange Group (JPX), which is a testament to the stability and reliability of Colt’s network.” Colt has achieved high cost-performance by utilising its fibre and IP infrastructure. Colt IP Access reduced the TCO by 36% after its implementation without compromising the performance of the existing environment, according to Mr. Yamazaki.
Since personal information, such as user account information, is handled on the Internet, ensuring security was the primary requirement. Hit by a major DDoS attack in 2017, the company has particularly strict requirements for cyber security measures. The company decided to introduce Colt IP Guardian (DDoS protection service) and Colt Managed Firewall as an addition to Colt IP Access.
“We have determined that the integration of network and cyber security services will increase flexibility and speed in terms of operations as well as management. Colt provides its services globally, and we were attracted by its knowledge of cyber-attacks, not only in Japan but from overseas,” said Mr. Yamazaki.
“We really appreciate the Colt sales and support teams who responded with quick and precise proposals for our requests, which helped us reduce unnecessary costs of running the old system in parallel during the data centre relocation project. We have completed the relocation from the request for proposal to the opening in a short period.” added Mr. Takahashi.
Going forward
In expanding the number of users, au Kabucom is considering a complete shift from on-premise to cloud operations to enhance the system, including its flexibility.
“au Kabucom is in a phase of growth as a digital financial company. We hope that Colt will continue to support us in providing stable services and expanding our business as a network partner that goes beyond a simple network provider” (Mr. Yamazaki).
COMPANY NAME
au Kabucom
INDUSTRY
Securities and commodity futures trading business
CHALLENGE
Deliver highly agile and flexible network for improved user experience
COLT SOLUTION
Related content
Colt completes world-first transatlantic quantum-safe encryption trial
Successful trial marks a major step toward quantum-safe networking Colt Technology Services (Colt), the global digital infrastructure company, has completed a world-first transatlantic trial which tested the safety of data traffic against quantum computing threats. Colt successfully transmitted data at 100GbE across its terrestrial and transatlantic subsea networks using quantum‑safe encryption, powered by Nokia’s…
Colt announces new sales leadership appointments
Joe Scattareggia and Laura Farina hired to lead new Colt sales functions London, UK 12th January 2026 – Colt Technology Services (Colt), the global digital infrastructure company, today announced the appointment of Joe Scattareggia to lead its Infrastructure and Connectivity Sales team as executive vice president. Joe brings deep industry knowledge and extensive experience…
Colt expands Asia-Pacific alternative trading access with Nextrade partnership in Korea
Strategic partnership expands Colt’s APAC trading infrastructure as alternative venues capture market share in Korea Colt Technology Services, the global digital infrastructure company, today announced a major Asia-Pacific milestone. The company has signed a market data connectivity partnership agreement with Nextrade, South Korea’s first Alternative Trading System, positioning itself as a critical partner in the…
Colt Forecasts 2026 CIO technology priorities with AI for the Inference Era, Naas 2.0 and quantum-ready security expected to dominate the CIO agenda
Colt Technology Services (Colt), the global digital infrastructure company, today released the key enterprise technology and market trends it expects to dominate the CIO agenda in 2026. Based on customer insights, market intelligence and its own proprietary research, Colt anticipates AI Inference, the evolution of NaaS to ‘NaaS 2.0’ and quantum-safe security to shape the…