I had a run-in a few years back where a company claimed rights on a screenshot of work I did and tried to shake down bloggers who reproduced the original image

I had a run-in a few years back where a company claimed rights on a screenshot of work I did and tried to shake down bloggers who reproduced the original image saying that it was a derivative work of the screenshot. It turned out to be a completely innocent mistake, but with no disincentive to making such a mistake it will no doubt keep happening.