• ericjmorey@programming.dev
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    5 months ago

    I’ve been comparing crates on crates.io against their upstream repositories in an effect to detect (and, ultimately, help prevent) supply chain attacks like the xz backdoor1, where the code published in a package doesn’t match the code in its repository.

    The results of these comparisons for the most popular 9992 crates by download count are now available. These come with a bunch of caveats that I’ll get into below, but I hope it’s a useful starting point for discussing code provenance in the Rust ecosystem.

    No evidence of malicious activity was detected as part of this work, and approximately 83% of the current versions of these popular crates match their upstream repositories exactly.