Rust at the Execution Boundary

Problem

If the core policy engine or execution router suffers from buffer overflows or use-after-free vulnerabilities, an adversarial prompt could exploit the host machine, bypassing all logical policy gates.

Approach

The core HELM engine is authored exclusively in safe Rust. The borrow checker ensures memory safety without a garbage collector, ensuring deterministic low latency, while entirely eliminating the most common class of C/C++ vulnerabilities.

Invariants

• Zero unsafe blocks in the cryptographic receipt and policy routing hot paths.
• All WASI interactions use strictly bounded slices.

Artifacts

• HELM Source Repository

References

• MITRE CVE data on memory safety