The crypto space has always been a magnet for scammers because there is big money there.
Besides there is big money in crypto, scammers also can do varied ways through online activities. They can come from anywhere around the world because the digital world makes it possible for the scammers.
Fraud will never be 100% eliminated, but we can make our assets safer because fraud always takes advantage of our ignorance. It is very important to secure assets first with the principle of "Not your keys, not your assets) and prioritizing DYOR.
Indeed, it is impossible to stop frauds 100%. They come from anywhere around the world, how to stop them? Even, many of them are difficult to identify. So, they are free to do anything they want and they can appear at any time.
Sure, we can do preventive ways such as storing assets into non-custodial wallets because this kind of wallets is safer.
From my observations so far, not only in the crypto space, big money has always been the favorite place for fraudsters. The victims are often those who are in the most hurry and ignore all risks and those who are lazy to read or do DYOR.
True, it can happen at any field, it doesn't only in crypto. Fraudsters always try to deceive people anywhere.