Rapid7 released its National Exposure Index, which measures the top 30 ports and protocols on the Internet. Only three of the top dozen services are encrypted. The most exposed countries are the U.S., China, France and Russia, with Belgium at the top of the index. Some of the unencrypted services can be secured, but generally are deployed in the clear, case in point SMB/CIFS over port 445. The U.K. was especially high in its exposure of Microsoft SMB services, and 43.5 million servers/devices responding.
Source: https://threatpost.com/the-illusion-of-an-encrypted-internet/118519/