We noticed this week that our Macbook wifi connection was slow. On inspection, we discovered that the wifi wasn't auto-connecting to our network, but rather one named ATT5g---.
If I selected our network, then went BACK to that network, it required a password to login. If I turned off our wifi and turned it back on, it would select the ATT wifi first.
Of course, I thought, "man in the middle" attack? (Because I'm not really tech savvy). But it seems like it would be a bad one, as it was easily discoverable and provided the IP address. Still ...
In getting rid of the network as a "preferred" network, I noticed in the Advanced setting a slew of networks we've connected to via iPhone/iPad - like pizza joints, libraries, etc. So I started connecting some dots.
- ATT sounds like it's probably Uverse.
- The neighbors across the street have Uverse.
- My son is friends with the neighbors and connects his iPhone to their wifi when he goes over
- We have iCloud keychain.
- Chances are, through iCloud, the Macbook picked up on the wifi network and started automatically connecting to it.
- The neighbors run a business from their house, so they likely have more than one router (hence the multiple ATT wifi networks) and a stronger, safer network.
- Those routers are likely synced. (My son says he can't remember their network name and the ATT wasn't familiar. That he thinks he connects to "linksys.")
- No other device in the house connects to that wifi (no iPads, not my Dell, etc.)
Now, I couldn't get my son's iPhone to connect to the ATT wifi, which is a sticky in the wicket. I see the ATT wifi, but requires a password if I try to connect. But maybe because it's a specific router and not the linksys?
Does that make sense? Have you heard of Macbooks connecting to other wifis as a regular issue?