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Adding 2FA and SSO to Legacy Applications

Legacy applications, often integral to operations in sectors like healthcare, finance, government, and manufacturing, are software structured for older platforms or those not web-enabled, and they pose significant security risks due to their outdated nature.

These applications, while serving their specific utility effectively, are usually not upgraded frequently, leaving them vulnerable to security breaches. The integration of Single Sign-On (SSO) and Multi-Factor Authentication (MFA) with these legacy applications is fraught with challenges, primarily because they were not designed to accommodate advanced MFA technologies.

Many organizations are confronted with the formidable task of rewriting applications to integrate advanced security measures, a task that is not only strenuous but also costly, especially with the constant evolution of MFA technologies. Additionally, the lack of access to the source code of commercial legacy applications makes modifications or integrations extremely complex and limiting, obstructing the direct implementation of enhanced security protocols.

CodeB 2FA for Legacy Applications

CodeB offers an innovative solution to these challenges, enabling the instant integration of advanced security measures, including passwordless authentication options, without needing access to the source code or extensive modifications to the existing system.

CodeB’s software-agnostic approach allows organizations to introduce SSO, MFA, or Passwordless Authentication to legacy applications without altering or rewriting them, ensuring continuous compliance with security mandates and access to the latest security solutions, thereby empowering organizations to strengthen their data against cyber threats and assure clients about information security, all while avoiding the incessant cycle of application updates to align with emerging technologies.

To illustrate the application of CodeB’s solutions, a rudimentary mock-up legacy application has been created, simulating the user login process within a legacy Windows Forms application environment. This mock-up serves as a practical demonstration of how Passwordless Authentication, SSO, or MFA/2FA can be seamlessly integrated into any legacy applications.

Try it out

To explore and understand the process, you can download the mock-up app from and adhere to the instructions provided in the included readme.txt file. This hands-on experience aims to elucidate the ease with which advanced security measures can be implemented in legacy systems using CodeB’s innovative solutions, thereby enhancing the security posture of organizations relying on outdated applications.


It is crucial to acknowledge that this mock-up utilizes a fixed username and password; however, it is evident that any Windows form field or button can be synchronized with the various 2FA and Passwordless Tokens supported by CodeB. This includes, but is not limited to: OpenID Connect, NFC, MIFARE, DESFIRE, Plain Memory Stick, and X.509 Certificate.

If there is a requirement for support for a specific token or a connection to your existing identity provider, please feel free to reach out for assistance at CodeB is committed to offering tailored solutions to meet the unique needs of every organization, ensuring enhanced security and seamless integration with existing systems.

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