Today, for the first time since, well, ever [*], I saw my PC at home showing this screen, to me absolutely mysterious, with a 404 reported by NGNIX on a Hotspot Login page. The PC is a desktop, connected via gigabit ethernet (as in, wired) to the home LAN; the machine does not even have a wifi device (not configured, anyway — it is possible that the motherboard has a wifi device.
Ignored it (a bit puzzled and worried).
Arrive at my workstation at work, also Ubuntu 22.04 and also exclusively wired connectivity, and surprise, the exact same screen mysteriously showing. This is a partial screenshot:
My two questions (or question with a follow-up sub-question):
- What is this and why did it happen "randomly", but such a big coincidence?
- Should I be worried that my machines were breached? (I have the SSH key on my machine at home that allows me to directly log in to the work machine)
[*] I have been working exclusively on Ubuntu since Ubuntu 8.04, and upgraded my two main machines (home and work PCs) from 18.04 to 22.04 shortly before the support period expired.