I don't think I want to get into what is or is not security, but what I will say is that rust's security does not interfere with safety net features, like sandb

I don't think I want to get into what is or is not security, but what I will say is that rust's security does not interfere with safety net features, like sandboxing. I've found that sandboxing rust is quite easy, as easy as C or C++. I find it much easier than Java/ Python, which have runtimes that can often make things difficult (you certainly would not want to use seccomp in either). Take a look at DropBox's Brotli - it's a great example of this. It makes use of seccomp, but seccomp is not available on all platforms, so it also relies on rust's safety.