I don't think you can claim your code is secure, or can claim anything at all about your code, if you haven't written the code and have no idea what's in there.

Rust protects against a rather small group of memory error, if and only if the unsafe sections are actually correct. And nobody knows if they are correct or not, plus there can be millions of logical errors that can be exploited.

See how many CVEs uutils has… quite a lot for a supposedly secure rewrite of GNU coreutils.