---
id: 6608
title: "Two popular Rust crates arrayref and append-only-vec compromised in Supply Chain Attack"
source_domain: aikido.dev
source_url: "https://www.aikido.dev/blog/two-popular-rust-crates-arrayref-and-append-only-vec-compromised-in-supply-chain-attack"
published_at: "2026-08-20T00:00:00Z"
tags: ["supply-chain", "threat-intelligence", "rust", "aikido", "backdoor", "open-source-security", "crates", "proc-macro1"]
phying_url: "https://phying.com/item/6608"
lang: en
---

# Two popular Rust crates arrayref and append-only-vec compromised in Supply Chain Attack

## Summary

Aikido flags the largest Rust crate compromise yet: arrayref, append-only-vec and internment, poisoned with a proc-macro1 build-time dependency that fetches platform-specific payloads when compiled.

## Why it matters

This incident coverage highlights observed attacker activity and practical defensive lessons.

## Intelligence Metadata

- **Sources:** aikido.dev
- **Published:** 2026-08-20T00:00:00Z
- **Original:** https://www.aikido.dev/blog/two-popular-rust-crates-arrayref-and-append-only-vec-compromised-in-supply-chain-attack
- **Phying News:** https://phying.com/item/6608