FBI recently warned that hackers are targeting insecure file transfer protocol servers to steal medical data from healthcare organizations. The FBI said in its warning that hackers seeking FTP servers were seeking to steal health and other personably identifiable information in order to intimidate and harass business owners. As of March 29, Shodan returns 756,874 results, of which roughly a third are in the U.S. Poland is in the No. 2 spot, followed by Germany at 52,000, China at 50,000 and South Korea at 27,000.”]
Source: https://www.inforisktoday.com/blogs/your-ftp-server-waiting-for-hacker-p-2436