@bot like lets say you click a button to do something like delete an account. this sends a request to some url that causes that to happen. theres more details like login sessions and stuff but theyre irrelevant. anyways, so usually along with the link to do something, you want to include a little proof of your login at the end, this could be a password or a cookir or something, just something private tied to your account so that there isnt one link for everyone someone can send you. but webdevs are stupid and forget to do that alot. thats called CSRF.

so like a link to delete your account should be something like /account/delete?your_password_or_something
but dumb devs forget to require the password or such