In development, you should separate your npm publish credentials from your dev execution environment. Use some kind of sandbox where you `npm install` -- a VM i

In development, you should separate your npm publish credentials from your dev execution environment. Use some kind of sandbox where you `npm install` -- a VM is best. In production, you should review the packages in your dependency tree and ensure that the exact version you reviewed is what you deploy. To that end, you should shrinkwrap your dependencies. Vendoring works well too. Shameless plug: for additional strictness in your shrinkwrap, you can use https://github.com/chromakode/exactly https://github.com/chromakode/exactly to store content hashes.