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Deleted GitHub data is forever accessible to anyone, researchers claim | Cybernews (cybernews.com)

submitted 1 month ago by AnActOfCreation@programming.dev to c/technology@lemmy.world

16 comments fedilink hide all child comments

“The implication here is that any code committed to a public repository may be accessible forever as long as there is at least one fork of that repository,” the report’s authors claim.

Am I dumb or is this exactly the purpose of forks? I feel like I'm missing something.

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[–] Dave@lemmy.nz 2 points 1 month ago (1 children)

Thanks, I think that explains it a bit more. It is unexpected to me, as a non-git expert, and I'm sure many others.

[–] Morphit@feddit.uk 2 points 1 month ago

I guess the funny thing is that each Git commit is internally just a file. Branches and tags are just links to specific commit files and of course commits link to their parents. If a branch gets deleted or jumped back to a previous commit, the orphaned commits are still left in the filesystem. Various Git actions can trigger a garbage collection, but unless you generate huge diffs, they usually stick around for a really long time. Determining if a commit is orphaned is work that Git usually doesn't bother doing. There's also a reflog that can let you recover lost commits if you make a mistake.