I created a linkedin account once, didn't even post any resume, and it somehow found and connected me to coworkers from many years ago, whom I absolutely didn't

I created a linkedin account once, didn't even post any resume, and it somehow found and connected me to coworkers from many years ago, whom I absolutely didn't want to know where I work and what I'm doing. Beyond creepy. I deleted account immediately and won't touch linkedin with a ten foot pole.