I let somebody unknown use my internet through hotspot
Hello to whoever is reading this,
I did a mistake, I don't know what I was thinking and usually I wouldn't do it. Random, older guy with his friends on usual place to call taxi stopped me, if he can use my internet to call taxi, because it's so much cheaper and he doesn't have internet connection because he is a tourist. I first didn't want to because I just don't usually risk things like that but he even said that he can give me money so I said it's ok, just do it fast and I let him connect to my new created hotspot, gave him name and password. I was looking all the time at what was he doing, he just called taxi through normal taxi application that I know as well.. but when he was writing down the password, he was mumbling it so maybe some of his friends could connect as well, and I didn't notice it. After that I turned off the hotspot, changed password, restarted phone.. even if it was probably useless. He had new Samsung galaxy S10 and full mobile of applications (like hundreds of them), so he probably knew how to use phone even though he was older.
My question is, is there some harm that he could do within that one minute of connection ? If not him, then somebody else.. just hypothetically, everything within that one minute.
Thank you for answers, hopefully it will be ok.