So some time ago my aunt dropped my younger cousin off my house for a while so she can get some work done. He brought his laptop with him and asked if he could connect to the home WiFi and I obliged. Now being the young kid he is, I’m not sure if he’s well versed in internet security so I don’t know what files he has on his computer or if he’s downloaded anything with malware or viruses in it. I’m worried that my devices, primarily my own laptop and my phone, could have been infected by being connected on the same network as his laptop. Is this possible? Is this a problem?