Governance Governance

Information security management

Updated August 2025

Information security management

Strengthening of group ICT governance

The Denka Group is promoting business process reforms in all fields of corporate activities, including research, manufacturing, sales, and management, and striving to utilize and enhance ICT (Information & Communication Technology) across the Group to improve work efficiency and strengthen governance. At the same time, to protect the Denka Group's information assets from leaks, falsifications, and sophisticated cyber attacks that may occur due to the use of ICT, the Denka Group is establishing security infrastructure at the Group level and strengthening preventive maintenance based on risk management. Furthermore, the Denka Group has established a set of information security regulations, including the following Information Security Basic Policy.

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Basic Policy on Information Security
Article 1 (Compliance with Laws and Regulations)
The Company Group complies with laws, regulations, and other social norms regarding information security.
Article 2 Establishment of Information Security Governance Structure
The Denka Group strives to establish an information security and governance system through the development of regulations in order to ensure the safe and appropriate management and utilization of information assets in accordance with the Denka Group Code of Ethics.
Article 3 (Operation of Information Security Governance System)
The Company Group is promoting the ICTization of its internal operations and preventing unauthorized intrusions to its information systems, leaks, theft, tampering, destruction, and loss of information assets, and strives to ensure the appropriate operation of its information security and governance systems.
Article 4 (Information Security Training)
The Company Group will continue to raise awareness of important matters regarding the management of information assets and information security through employee training such as e-learning.
Article 5 (Prevention and Response of Information Security Incidents)
The Company Group strives to prevent problems regarding information security for its information assets. In the unlikely event that a problem occurs, the Company will respond promptly to the problem and work to prevent its recurrence.
Article 6 (Ongoing Improvement of Information Security Governance System)
The Company Group will continue to review its activities regarding information security and governance systems and make improvements to these systems in accordance with the demands of the times.
Article 7 (Enforcement)
This Policy is effective as of April 1, 2021.
Management of website published information

Denka ensures management transparency by disclosing timely and appropriate company information in accordance with the Financial Instruments and Exchange Act and the timely disclosure rules established by the Tokyo Stock Exchange. Furthermore, even for information that is not required to be disclosed by laws and regulations, Denka strives to actively disclose information that is deemed useful for stakeholders. Denka also seeks to deepen communication with stakeholders by utilizing as many opportunities as possible, such as earnings briefings, company briefings for individual investors, and shareholders meetings, and reflects the opinions received in its management and business activities.
Moreover, for timely disclosure information announced by Denka, the Company confirms the information disclosure on the Tokyo Stock Exchange before publishing it on the Denka website, thereby preventing the preemptive acquisition of timely disclosure information by unauthorized third parties. Denka has also established a website management system, limited working environments, installed protective systems, and established response procedures for emergencies.
In the future, Denka will continue to promote the strengthening of ICT governance for domestic and overseas Group companies based on internal controls, and aims to avoid losses and further enhance corporate value through these measures.

Efforts for Information Security

At Denka, we are strengthening our three-pronged approach of ① systems, ② processes, and ③ education as part of our efforts to enhance information security. As a system enhancement to protect information assets, we are working to prevent cyber attacks and information leaks. In terms of process development, we aim to establish a crisis management system to respond to major incidents in information security. In terms of education development, we aim to deepen the understanding of information security among all employees so that each employee can safely and reliably use information assets in their work. By continuing to review risk management in information security, we will strive to avoid risks and minimize losses.

Item Scope Unit 2023年度 2024年度
Percentage of employees who have taken information security training Consolidated % - 100%
  • ※1Employees without company-provided PCs and email addresses are also eligible for group training. Factories include group companies within the premises.
  • ※2Conducted at DCG, Icon, DISB, Denka Astec, Denka Azumin, Denka Elast Solution, Denka Polymer, Kyushu Plastic, and Hinode Chemical Industry, mainly through affiliated companies with manufacturing bases.
  • ※3E-learning is not available for employees who do not have company-owned PCs and email addresses.
Basic Policy on the Protection of Personal Numbers and Specific Personal Information
DFF Inc., Denka Company Limited CSR and Public Relations Office, Denka Company Limited IR Office, Seiwa Business Link
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