How safe is it to share with the Everyone group in Windows 10?

Question

System administration

We have 1 WiFi router in the apartment, to which a computer with a shared folder is connected via Lan. The folder has been given access to the Everyone group. The laptop works with the same router via WiFi and enters the shared folder on the computer without any problems. When I disconnect the laptop from WiFi, the shared folder disappears. Does this mean that only users connected to my WiFi have access to the folder, or does everyone in the house with WiFi have access to my shared folder?

Answer 1

Oh my God.
When you disconnect the laptop from the network, the folder does not disappear anywhere - it's just that the laptop does not see it, because there is no network, ahem. When you turn off the TV, CNN doesn't stop broadcasting.
In the general case, the folder will be seen by all nodes on the network (everyone who is connected to your router, no matter whether it is copper or Wi-Fi).