Taking devices offline and fixing them yes but my problem is I can’t change my isp details, I can but they hacker can recover my isp account. I was gonna activate my new isp modem on someone else’s device so I wouldn’t be home for awhile and during that period of driving home my modem would be vulnerable to attacks because my firewall won’t be installed until I get home. thanks again for your feedbackA few years ago, there was a modem hack using the 192.168.100. x network on the modem. If you block that network in your router, then your modem cannot be hacked.
I think you are all too worried. Bleeping computer has a lot of fixes for hacks. You need make a plan and take everything offline and fix it all before you come back online. If you miss, then you need to do it again. If your PC is hacked, then it needs to be low level formatted on the hard drive and re-installed. Do not install a backup.