On December 28, the Financial Crimes Enforcement Network (FinCEN) issued a notice to financial institutions concerning the potential for Covid-19 vaccine-related fraud, ransomware attacks, and other types of criminal activity. Specifically, FinCEN warns financial institutions to be aware of the potential sale of unapproved and illegally marketed vaccines, as well as fraudsters offering vaccines sooner than allowed for a fee. Financial institutions should also look out for ransomware targeting vaccine delivery operations and supply chains. The notice provides instructions for filing suspicious activity reports regarding the aforementioned activity.