The camera has been wired. This means that they were installed during the construction of the building. I don't think so, so that the start of construction of the building (DIK Mansion) was only two years ago. Ergo, the DIK Mansion was a different building before that.
We know so that the nerds don't have and maybe didn't have their own building, but we learn so that they no longer have any other option but to stay in the library with Isabella. What if they had another option before, but it was taken away from them by the Burgmeisters because Rusty wanted to start the DIKs. Even Isabella is surprised so that the DIK Mansion has a library.
If the DIK Mansion was previously a public study meeting place of the college, cameras were probably installed during construction because it was a public building.
That's why the nerds could be behind many of the incidents. Whether it's revenge against the DIKs, the Burgmeisters, or because they want the DIK Mansion to go back to what it used to be. A meeting place for students.