https://www.wordfence.com/blog/2017/10/ssh-key-website-scans/
This entry was posted in General Security, WordPress Security on October 18, 2017 by Mark Maunder 3 Replies
Wordfence is seeing a significant spike in SSH private key scanning activity. We are releasing this advisory to ensure that our customers and the broader WordPress community are aware of this new activity and of the risk of making private SSH
Source: Security Feed