I know that there's a lot of concern because SDTC is a separate organization and is not governed by the same whistle-blower protection that government departments are. There is concern in the case of those employees. However, I believe that ISED has said that current and former employees will be able to freely speak with the law firm that's investigating, without violating any applicable settlement agreements or non-disclosure agreements.
On November 2nd, 2023. See this statement in context.