1 INTRODUCTION  
1.1 Related Works  
1.2 Contributions  
2 GENERATION  
3 DETECTION  
3.1 Text  
3.2 Image  
3.3 Video  
3.4 Audio  
3.5 Multimodal  
4 TOOLS  
5 DISCUSSION  
5.1 Challenges  
5.2 Future Directions  
6 CONCLUSION