Mirai Likely Behind Port 6789 Scans. Yet Another Backdoor
https://isc.sans.edu/forums/diary/Mirai+Scanning+for+Port+6789+Looking+for+New+Victims/21833/
OpenSSH update
https://www.openssh.com/releasenotes.html#7.4
Google Releases Tool to Audit Crypto Libraries
https://security.googleblog.com/2016/12/project-wycheproof.html
Escaping A Restricted Shell
https://humblesec.wordpress.com/2016/12/08/escaping-a-restricted-shell/
