As tax season opens, authorities are warning the public about an increase in scams, particularly those targeting cryptocurrency users. Scammers are reportedly using the name of the Receita Federal, Brazil's tax authority, to deceive taxpayers into making fraudulent payments. Tactics include sending fake emails that threaten victims with penalties, passport loss, and account freezes. Law enforcement and financial institutions are advising individuals to remain vigilant and educate themselves on how to avoid falling victim to these schemes. Resources and guides on scam prevention are being promoted to help protect assets, especially in the cryptocurrency space, which has become a prime target for fraudsters.