How the platform detects and guards against fake followers
Quick answer
A platform guards against fakes by reading the patterns bots leave behind rather than trusting the follower number. The tells are consistent: engagement that is far too low for the follower count, sudden unnatural follower spikes, audiences clustered in odd locations and comment activity that looks generic or automated. By scoring these signals it flags accounts whose reach is inflated before you pay for it. No detection is perfect but catching the obvious padding is the difference between paying for real reach and paying for a number, which is exactly the loss vetting exists to prevent.
I keep hearing platforms can detect fake followers but I do not understand how or how much to trust it. How does the platform actually guard against fake followers and is the detection reliable?