As if Americans concerned about the Covid-19 pandemic didn’t have enough to worry about, federal officials now warn that criminals are targeting vaccine deliveries and supply chains, the Wall Street Journal reports.

The U.S. Treasury’s Financial Crimes Enforcement Network (FinCEN) said it has identified “an array of vaccine-related crimes, including the sale of unapproved, counterfeit or illegally marketed vaccines” as well as providing individuals with vaccine before they’re authorized to receive it.

There are also cybercriminals who attack vaccine researchers with ransomware, locking up vital data in computers and demanding payment for unlocking it.

FinCEN warned banks and other financal institutions “to be on the lookout for phishing schemes seeking to snare victims with misinformation about vaccines,” the Journal says.

Law enforcement agencies, including the FBI and Interpol, issued similar warnings earlier this month.