opkey.com is an AI engine company cloud thing, I think like a google cloud computing type thing. Judging by the data, which shows a lot of "wp," I'm assuming it was running WordPress and someone got in. Data is pretty small, and all the files are csv format except for a few.
Edit: Files say May 9th, 49 files totaling a whopping 34.7 MB
Edit: Files say May 9th, 49 files totaling a whopping 34.7 MB