A single atom of gold is far too small for any photon in the visible spectrum to interact with.
A single atom of gold is 0.2 nanometres (a nanometre is an incredibly small thing and a gold atom isn’t even half of 1% of that), meanwhile the wavelength of blue light (The smallest wavelength of visible light) is a hulking 380 nanometres. No matter how much you zoom in you would never see anything a single atom is just too small to interact with light.
You get that hacking isn’t magic right. In order to “hack it” the files actually have to be available on the public network. If they’re just on an internal file system you would have to be on site to get access.