When using MTN MoMo APIs, it is important to keep security top of mind. The API is designed to be secure, but it is still important to take steps to protect your data and payments. Here are a few security considerations to keep in mind:

1. Use strong passwords: When creating your account on the MTN MoMo Partner Portal, ensure that you choose a strong, unique password. This will help keep your account secure.

2.  Frequently change the API Key on a quarterly basis from the MTN MoMo Partner Portal.

3. Monitor activity: Monitor your account activity on a regular basis. This will help you spot any suspicious activity and take action quickly.

4. Use encryption: Make sure to use encryption when transmitting data to and from the API. This will help keep your data secure.

5. Avoid sharing production API User and API Keys – this will put your account in jeopardy.