It’s always an open port on MongoDB or a public S3 bucket: http://thehackernews.com/2017/07/over-14-million-verizon-customers-data.html.
It’s the regular npm security bullshit that we all know and love:
https://news.ycombinator.com/item?id=14901566
An app named “cross-env” is typosquatting a popular package named “crossenv” to gobble up your environment variables (where people tend to store their most sensitive token credentials you can’t include in your source code).
While I’m no pro at npm, you can start by examining your global packages with `npm ls -g` and grep for `cross-env` or your OS equivalent for grep.