My expertise lies in artificial intelligence, so I'll confine myself to that aspect.
As I said earlier, people can now make deepfakes using very easy-to-use software. In the case of public figures for whom it's easy to obtain images or voice samples, it becomes easy to imitate them. You can reproduce their voices very convincingly. As for video, it's not always perfect, but it's becoming more and more effective.
What also worries me is that these systems are leading us in a direction where we'll be able to impersonate someone we know interactively. It's like someone committing phone fraud. Using artificial intelligence, they pretend to be someone else, and the caller on the other end of the line actually believes they're talking to the person in question. So you could receive a phone call from a supposed political leader and think it's really him.
All this is developing. So, we absolutely must put in place regulatory safeguards to minimize the risks and be able to prosecute people who, under the cloak of anonymity, cheat on the Internet.