@Shellyellie2818 only if they know your WiFi password. If you suspect that applies change the password see https://www.sky.com/help/articles/find-and-change-your-wireless-password
Although theoretically people can hack wifi networks it is in practice very rare but sharing of paswords is compatatively common.
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65inch Sky Glass, 3 Sky Streaming Pucks, Sky Ultrafast + and Sky SR213(white Wifi Max hub) main Wifi from 3 TP-Link Deco M4 units in access point mode
