[MargaretR]

I live in a flat and so have neighbours close.
To avoid anyone else 'piggybacking' my connection I have disabled the wireless facility on my BT homehub, and connect via an ethernet cable. (I only get 10GB a month, and I want to be the only one using it)

I am the only person with access to this PC so I dispensed with the password sign in, until my son (has an IT degree) told me that without an access password in place it is easier for remote hackers to gain access.