Yes, its gonna happen because a lack of research before investing money in a newer project could vanish your capital. Now there are major chances many people would use Defi as a weapon to scam people and investors with a lack of research gonna thinks Defi is good and become a victim of a scam.
Yes, scammers in crypto will always use new things to deceive many people, especially investors who are negligent of project research, now the DeFi system is in trend and is trusted by many people in crypto, this is what scammers will take advantage of. to find victims, so always be careful and research carefully to reduce the occurrence of fraud on ourselves and others.