Thanks for your follow up, it is appreciated. I am fairly confident I am okay since I have n ver knowingly given anyone access to any of my private keys, but I wonder if there is a way one could do so unknowingly.

You have highlighted the memo function as a potential vulnerability. The only times I have never included any memo is when making a deposit to Openledger and entering my account name in the memo field. I don’t expect this would create a vulnerability but I would love to be corrected if I’m wrong! Thanks again!