Malicious gossip has it that there are people actively looking for forgotten attribution to their work and suing, just because they can. In fact there is at least one person in Germany I heard of who does this for his (and his lawyers) living.

I have not found anything related to this here on meta, maybe the question could exclude the assumption of 'not enough attention' to more generally discuss this topic. (If you think that would be better just edit it out)

feel free to edit the title, question and tags as I am quite unfamiliar with meta.