Computer Weird IDK

I was resetting my computer, and when I got back on, I checked my Windows Security. It showed a message regarding some IT admin settings that blocked certain content on a webpage. I was confused because my Edge startup page was set to icampus(dot)strayer(dot)edu, which I had never seen before. I didn’t even know that it was a school, and I have never signed in with a school account on this personal computer. So, I have no idea what's going on.

I fixed this problem with chatgpt but uhm the custom page on edge is there