[lights0123]

Other way around. Just a single contributor who licensed their changes under the GPL can sue. The fact that it's a larger work doesn't matter, because each contributor's rights were infringed, so they have the right to sue.

[whocares2345]

Come to think of it - I agree. Anyone whose rights where violated can sue. The challenge of proving authorship and copyright still remains. Honestly not sure what if any available options (git commits, file headers) are really recognized. Basically I can claim that it is I that committed the code under a pseudonym that matches someones real name. Also you can find someone’s namesake etc.

[kadoban]

It's more of a technicality than a challenge in the vast majority of cases.

> Basically I can claim that it is I that committed the code under a pseudonym that matches someones real name. Also you can find someone’s namesake etc.

I mean, you can claim obvious falsehoods if you want, but especially doing so in court isn't going to be a good idea.