| 1 | They use fake accounts to perpetrate scams. | |
| 2 | The public security authorities have taken multiple measures to combat online fraud. | |
| 3 | The police have completely cracked down on this fraud ring. | |
| 4 | How to be on guard against pickpockets and swindlers? | |
| 5 | Medical institutions should work together to combat medical fraud and false advertising. |