For malware that was downloaded through activity, even if it required no clicks, they usually present themselves as slower performance or other quirks. Maybe on

For malware that was downloaded through activity, even if it required no clicks, they usually present themselves as slower performance or other quirks. Maybe one has eluded discovery but I'd never know. I'm much more wary of systemic malware at lower levels that I don't have an opportunity to detect. There's not so much I can do about that other than try to use devices from vendors I trust (or distrust less) that have the least preinstalled software. Lobbying for open firmware or hardware is the long-term strategy. I also use multiple machines: work, personal, gaming, and utility (Surface Go). E.g. I use the mouse configuration software on the Surface Go and only the mouse hardware with its configured profile on the other machines. Ultimately I can't know I'm not compromised but don't lose sleep over something I don't have more control over.