Here is a list of best practices for securing your online cloud storage:

1. Employ authentication and authorization protocols when allowing user access
2. Make sure all your data is encrypted
3. Utilize multiple factor authentication for all online access
4. Update your network regularly
5. Utilize an access control list awareness system
6. Ensure only the necessary users have access to the data
7. Utilize audit trails
8. Keep up with the development of new security measures in your field