Show us your KOMs on Strava

[robbybzgo]

First option is to message the person directly on Strava. I did that the other day to an old guy (his photo) who scooped a few KOM's. He confirmed back that it was on a new E-bike so I suggested that he change the ride to E- BIKE. He was quite accepting and changed it.

You could also request them to crop the ride of finished in a car.

Other than that you can just report it citing unrealistic results or top speeds or heart rate not matching the performance.