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File canary kill switch (gitlab.com)
submitted 1 month ago by to c/linux@lemmy.ml
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cross-posted from: https://programming.dev/post/52544724

I wrote a dead simple file canary tool that will install an eBPF program that drops all outgoing packets if a canary is touched. I wrote this in response to the current trend of supply chain attacks that try to harvest credentials

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[–] 9 points 1 month ago (2 children)

I wonder what the ideal placement or naming of such a file would be, where are credential scrapers going to check first?

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  • [–] [S] 14 points 1 month ago*

    I'm hesitant to share my list :)

    I'd consider looking at recent attacks by TeamPCP and the recent AUR compromise for inspiration. Some obvious targets are fake SSH keys, cloud provider credentials that you don't use, package manager credentials that you don't use, etc. Also things that allow a configuration and accept a default value you can place a canary at the default value and configure for a different path.

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