I had installed ARD from app store but have since deleted it as I had never used nor intended to use it. I've just received an ARD update via app store even though I don't have ARD. Is this correct?

I had installed ARD from app store but have since deleted it as I had never used nor intended to use it. I’ve just received an ARD update via app store. Is this correct?

The reason I ask is because I received two emails from Apple a few months ago informing me that my apple id was used to restore my backups to two devices not belonging to me. (beyond frustrating…)
I want to be sure that no other information is being utilized… although I don’t know how much is left untouched considering my backup contained most everything. I have many, many crash logs on both my iphone & iMac every day, but that is another topic entirely I suppose, but with that said, it is extremely hard for me to educate myself on each error, vulnerability, crash, etc. Apple has done nothing for me since emailing me regarding the theft of my id, password, & all of the contained information.

Anyway, can I be certain that nobody is using ARD on my iMac? Why would I get an update for an app I no longer have installed?
I suppose that another version of ARD could have came installed on iMac, but I cannot find any such program in any search on my computer. Any & all help is appreciated. Thank you.