I think I removed flash from safari on my Mac mini but how can I tell for sure if I still have flash installed? because if I do it's probably an older version.
I had the same concern. I found that my flash player was updated. Possibly from the last safari update and possibly the flash player was set to autoupdate when I originally installed it 10 years ago?
From Safari: Preferences: Security: Internet Plug-ins -> Plug-in Settings
Adobe Flash Player, current version 21.0.0.213
I changed the settings to ask per webpage but always allow youtube, hulu, netflix, and gamepass.nfl.com. You can do this easily by navigating to those webpages while keeping the plug-in settings window open.
I thought it was funny that Safari then asked to use flash when I came here to forums.macrumors.com, so perhaps those calling for a boycott should start with this site!
M@
Edit: I do have Flash set to autoupdate.
Flash is installed system wide.
Apple Menu: System Preferences: Flash Player (bottom, add-on section)
Updates tab: "Allow Adobe to install updates (recommended)"
NPAPI is for Safari & Firefox
PPAPI is for Chrome and Opera