How to avoid having photos stolen?

Hi, short story is that a semi popular photography IG page asked if I could send them some of my photos for them to post and they’d give me credit. I plan to send the photos in a Google drive link.

This is the first time I’m having my photos presented anywhere besides my own IG and I’m slightly nervous about sending my photos to a stranger in the off chance that they then “own” the photos and could try to sell them or something? Not sure if that’s a silly thought but is there any way to mitigate that risk? Some of the photos may contain higher profile people.