It's about a person calling you and saying that they have accidentally sent money through Swish to you.
The police state that the caller is very apologetic and, for example, says that they have bought a pizza, have bought an item on Blocket or similar and that they would swish money for the pizza or item to a friend, to the restaurant or the seller.
You are then asked to swish back the money and through this the fraudster gets access to your login information and your account.
Watch the clip to see how the fraud, according to the police, works and the police's tips to prevent you from being cheated.