--- title: "Prevent npm and Python Supply Chain Attacks on Developer Machines with Package Configs" url: https://daily.dev/posts/prevent-npm-and-python-supply-chain-attacks-on-developer-machines-with-package-configs-mohflxair source_url: https://www.stepsecurity.io/blog/prevent-npm-and-python-supply-chain-attacks-on-developer-machines-with-package-configs type: article source: "StepSecurity" published: 2026-06-16T21:07:56.203Z updated: 2026-06-16T22:24:03.562Z tags: ["security", "python", "npm"] reading_time: 8 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Prevent npm and Python Supply Chain Attacks on Developer Machines with Package Configs **[StepSecurity](https://daily.dev/sources/stepsecurity)** · 8 min read · 0 upvotes · 0 comments ## Summary A wave of self-replicating supply chain worms (Miasma, Hades, Shai-Hulud) has been hitting npm and PyPI, compromising trusted packages to steal developer secrets and publishing tokens. The core problem is that even when organizations configure internal registries and cooldown policies, individual developer machines often drift off the protected path via project-level .npmrc overrides, missing cooldown support, or hardcoded credentials. StepSecurity's new Package Configs feature (part of Dev Machine Guard) audits every developer machine in a fleet to surface: which registry each machine actually resolves from, whether a cooldown policy is in effect, and whether registry credentials are hardcoded in config files versus safely stored in environment variables. This gives security teams a concrete, actionable view of configuration gaps across the entire fleet so they can close the specific weaknesses these worms exploit before the next wave hits. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Four More Supply Chain Attacks Hit npm and PyPI](https://daily.dev/posts/four-more-supply-chain-attacks-hit-npm-and-pypi-g68buqqbp) · GitGuardian · 7 upvotes · 0 comments - [New npm supply-chain attack self-spreads to steal auth tokens](https://daily.dev/posts/new-npm-supply-chain-attack-self-spreads-to-steal-auth-tokens-p3mykawe4) · BleepingComputer · 121 upvotes · 17 comments - [Another npm supply chain worm hits dev environments](https://daily.dev/posts/another-npm-supply-chain-worm-hits-dev-environments-birdicj09) · The Register · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#python](https://daily.dev/tags/python), [#npm](https://daily.dev/tags/npm) [View this post on daily.dev](https://daily.dev/posts/prevent-npm-and-python-supply-chain-attacks-on-developer-machines-with-package-configs-mohflxair)