A decompressor is an interpreter for hostile input: here's what that costs to ship safely

Short summary

A decompressor is a high-risk attack surface: it processes untrusted input in countless hot paths across infrastructure. ZXC hardens against this through layered defense: fuzzing on five API harnesses, multiple static analyzers with different blind spots, supply-chain security (SLSA attestations, SBOMs), and API design that forces explicit buffer-capacity decisions. The xz backdoor showed the danger; this article details the engineering practices needed to ship safely.

• •Decompressors are dangerous because they parse untrusted input in critical infrastructure (web servers, firmware, SSH)
• •ZXC uses defense-in-depth: fuzzing on five harnesses, multiple static analyzers, and strict API design requiring explicit buffer capacity
• •Post-xz incident, supply-chain security (SLSA attestations, SBOMs, signed releases) is now table-stakes for secure library distribution

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