Yandex search engine
Recently bought a Mini with Mojave. I migrated my data from a 2009 iMac that was running El Capitan.
I don't normally use Safari, but opened it as part of web site testing. I found the Yandex search engine installed, but I didn't not think much of it.
Until yesterday, when I learned Yandex isn't in some systems. I happened to see another Mojave based Mac that did not include Yandex.
I wonder how I have Yandex, and the other system does not. I found a web page that said APPle had added Yandex to Safari in iOS7, but very little else.
All of which leads to questions such as, is it safe, why is it on my system, was it ever added to OS X, etc.
This started because I wondered if I could add my choice of search engine to Safari.
Any information would be appreciated.
Mac mini 2018 or later