(CNN) Just two weeks ago, Kyle "Bugha" Giersdorf won the $3 million championship in the Fortnite World Cup's solo competition.

But on Saturday, the 16-year-old became a victim of an increasingly popular form of attack. Kyle was in the middle of livestreaming a round of "Fortnite" on the video platform Twitch when he suddenly left the screen . Fellow gamers were concerned and confused until Kyle's voice came from off-camera.

"I've been swatted," he said.

Swatting is a potentially deadly prank in which someone calls the police and tells them that an urgent and violent crime has occurred at their target's location. The idea is to lure a SWAT team or other response team to the person's house.

Authorities have come down hard on this type of activity because it can have very real consequences. One man was fatally shot by police at his home in 2017 after such an incident. The man who made the hoax call was recently sentenced to 20 years in prison

Read More