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Ibm I Security Risks & Best Practices: Protecting Your System In 2025

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By Author: Siddhant Saxena
Total Articles: 3
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IBM i (formerly AS/400, iSeries) has a reputation for being one of the most reliable and secure platforms for business operations. However, security risks have evolved, and organizations relying on IBM i must stay ahead of potential threats. In this article, we’ll discuss the most common security risks and the best practices to keep your IBM i environment protected.
Key Security Risks in IBM i


Weak Passwords & User Authentication


One of the most overlooked vulnerabilities in IBM i systems is weak passwords. Many businesses still use default or simple passwords, making it easy for attackers to gain unauthorized access. Without multi-factor authentication (MFA), a single compromised credential can put an entire system at risk.


Unrestricted User Authorities


IBM i provides granular control over user permissions, but many organizations assign excessive privileges to users, often granting all-object or all-access rights unnecessarily. This makes the system vulnerable to insider ...
... threats or accidental data loss.


Unsecured Data Transfers


Many businesses still use outdated methods for data exchange, such as FTP, which lacks encryption. Without secure file transfer protocols (SFTP or FTPS), sensitive business data can be intercepted, leading to data breaches.


Lack of System Auditing & Monitoring


Without real-time logging and auditing, unusual activities can go unnoticed. Organizations that fail to monitor login attempts, file access, or configuration changes leave themselves open to security incidents.


Outdated Security Configurations


IBM i/AS400 security settings should evolve with modern threats. However, many companies continue using legacy security configurations that do not align with today's best practices. This includes outdated encryption standards and unpatched vulnerabilities.
Best Practices to Secure IBM i


Implement Strong Authentication Policies

Enforce complex passwords and automatic expiration policies.
Enable Multi-Factor Authentication (MFA) to reduce the risk of credential theft.

Apply Role-Based Access Control (RBAC)

Assign users only the permissions they need to perform their job functions.
Regularly review user authorities and remove unnecessary privileges.

Secure Data Transfers

Use encrypted transfer protocols like SFTP or FTPS.
Implement end-to-end encryption for sensitive data at rest and in transit.

Enable System Auditing & Real-Time Monitoring

Implement logging for login attempts, failed authentication, and file access.
Use security monitoring tools to detect suspicious activities and automate alerts.

Keep Security Configurations Up-to-Date

Regularly review and update security settings according to industry standards.
Apply patches and updates as soon as they become available.

Conduct Regular Security Assessments

Perform vulnerability scans and penetration tests to identify potential weaknesses.
Engage with an IBM i modernization company to ensure your system remains secure and aligned with modern security practices.

The Future of IBM i Security
As cyber threats continue to evolve, IBM i security strategies must keep pace. Companies leveraging IBM iSeries integration services can enhance security by integrating their IBM i system with modern security tools, cloud platforms, and AI-driven monitoring solutions.
By following these best practices, businesses can fortify their IBM i environments, protect sensitive data, and reduce security risks. Regular assessments, proactive monitoring, and security-conscious user policies will ensure your IBM i system remains resilient in 2025 and beyond.
Read an in-depth article on this topic here: https://programmers.io/blog/ibmi-as400-security-risks-and-best-practices/.

More About the Author

Siddhant is a tech enthusiast and IBM i programmer based in Coppell, Texas. He has expertise in multiple platforms such as IBM i/AS400/RPGLE/COBOL, Dot Net, PHP, Angular 2+, Node.js, etc. Currently appointed at Senior IBM i Developer at https://programmers.io/.

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