There are 2 things which are in abundance when it comes to modern day cybersecurity. One is vulnerabilities and the second is Terminologies. Here is another one for you: OpSec. So now what the heck OpSec is for a layman or a beginner? OpSec is a process that prevents sensitive information from getting into wrong hands. It stands for Operational Security. The term is not new but being now used in context of cybersecurity.