If someone is harassing you that person should be punished, not the mods, if the person really wants to harass you even if SE were able to block mods (what I highly doubt to be possible) what prevents that person to make a character exactly like you on character creation, put it naked in a thousand of different poses and doing nasty stuff and post all over the internet saying its you? they don't need mods for it, they could do it on a PS4 all within the game itself.