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Software supply chain backdoor via npm install

April 4, 2026a16z

a16z warns a hijacked popular package installed a backdoor on machines running npm install, reinforcing that the software supply chain is a critical and under defended attack surface for builders shipping fast with dependencies.

The software supply chain has become the most critical and least-defended attack surface in modern software development.
This week, someone hijacked one of the most popular packages on the internet and used it to install a backdoor on every machine that ran npm install.
a16z
supply chainchain attacksupply chainchain attack

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