I rarely go online with the XP these days, but when I do I am only visiting familiar sites I trust. I don't think I have any antivirus protection that still updates on that machine but I also don't have any critical files there (I changed all my programs to file directly to thumb drives so even if that machine is hacked they won't get much). I no longer use it to trade stocks. I used to have Avast but that stopped working years ago and I vaguely remember trying to find something that would still work on the XP without luck. Mainly I only use the XP to watch TV programs while I'm working on the Win10 machine.