Based on the announcement of The Ministry of Justice Japan in 2007, it is defined as follows: "Groups or individuals who pursue economic benefits using violence, power, and fraudulent methods.”「暴力、威力と詐欺的手法を駆使して経済的利益を追求する集団または個人」Anti-Social Forces include Japanese mafias (Yakuzas), of course. But they cover scammers, as well. Therefore, it is a bit ambiguous in the definition.