Safari fills in bizarre usernames and passwords
I'm on a 2014 Mac Air up to date with High Sierra.
Every time I start to log into a site with Safari, it fills in these weird, lengthy usernames and passwords. Behold:
I've gone into my password preferences and looked for these demons. They're not there. But they keep creating anew when I try to log into any site.
How can I make this stop? Thanks.
MacBook Air (13-inch, Early 2014), macOS High Sierra (10.13.3)