No. All covered persons (e.g., airlines, pipelines) must take reasonable steps to safeguard SSI in their possession or control from unauthorized disclosure (49 C.F.R. § 1520.9). Covered persons must limit access to SSI to other covered persons who have a need to know the information. Therefore, any stakeholder computer system that provides such access limitations to SSI would be acceptable. Please refer to the SSI Best Practices Guide for Non-DHS Employees for more information.