I learned to filter out indian hiring people because 100% of them started a conversation demanding “updated resume”. I noticed even if I said the one I submitted was most recent they would still demand I send another. Clearly trying to get more data from me.
Other than that we’re several positions at companies which couldn’t be validated, interviewers who were so clueless they had to be faking, and numerous other issues.
And of course that’s after already weeding out all the bot generated job postings.