I was at the airport a couple hours ago and had to use the airport’s public wifi for a couple hours on my laptop running ubuntu 20.04. I ended up installing a VPN like 15mins in because I was a bit paranoid. I just watched some youtube videos and googled some stuff.
I know potential listeners can read packets and steal personal information but is that everything they can do? what is the extent of the power someone can yield over my pc if we both connect to the same public wifi?