I was googling for my own answer from couple of years ago and was surprised to first find it from an Indian site called "Query Starter" https://www.questarter.com/
This site seems to mirror all questions from several SE sites, but not in realtime. I wouldn't mind if it was stated clearly that they are providing e.g. an accessibility interface or a proxy for slow local connections tofor enabling access to these sites via Stack Exchange API. Sharing the information is even encouraged:
user contributions licensed under cc by-sa 3.0 with attribution required.
But it's not. It's just all our content with added Copyright © QueStarter 2019
.
Does this site have any contract with SE? Is SE aware of it already?
Not sure if this should be handled legally or technically... possibly both. How SE handles copyright infringement in general?