Today my grand parents connected to my WiFi, the password was given to them by partner. Well after looking at their pcs we established they hired someone who has installed loads of stuff on the computer via remote access, which they accepted on their end when asked to do so.

Looking at the company that did this they appear to have fake the members using stock images, so at this point alarm bells are ringing.

My question is: what's the likelihood of my devices which were turned on and connected to the internet being compromised at the time that the compromised laptop connected.

The tricky situation is my partner has important information for his business on his computer, so a complete wipe he doesn't want to do which puts us in a tricky situation.

Partner is using a Windows based computer, I'm using Linux and both of our phones are android.

At the moment I am paniking because I don't know what to do. Our home network could be compromised and with my partner refusing to wipe.their machine, I'm afraod i could be compromised too.

I keep reading that it's unlikely that a sophisticated hacker would program this for low level tagrets.

What are your thoughts and what should I do next?