It took me far too long puzzling over how "tardigrade" would be a keyword for an injection attack of any sort, and the closest I came to a guess was "tard" (as in "retard") being blocked for offence, so for those like me who didn't see that story: https://news.ycombinator.com/item?id=24450828

Sometimes you need to stop something fast, and the overly broad thing like 'block any mention of tardigrade' so 'we don't go to jail' thing is needed until you can refine the regex to not be so greedy.

you just have to be willing to go back to do the refinement once the bleeding stops.