When my family was about to send my rishta for my now-wife, one of my uncles raised a concern that we didn’t know that much about my wife’s family. He helpfully suggested that as one of our close relatives was well connected with ISI (the Pakistani intelligence service), we should ask him to search for any information they might have on her family!!!
What was a little bit worrying is that my parents thought for a while before deciding “no” on that idea!