Server gets hacked. Admin posts details to Reddit. The exploit author responds

The HN post title is incorrect. It's the exploit author who responded, not the hacker / cracker.

Pedantic correction: the hacker does not respond the <i>author of software exploit tool</i> responds. Firefart himself did not actually hack into the sysadmins server, he wrote the code for a PoC that exploited dirty cow vuln. It seems the hacker used this code to gain root because of the unpatched software

Reminds me to always update my servers. And to always install a FIM (File Integrity Monitor) on the system.