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.
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.