In computer security, a vulnerability is a weakness which allows an attacker to reduce a system’s information assurance. Vulnerability is the intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. To exploit a vulnerability, an attacker must have at least one applicable tool or technique that can connect to a system weakness. In this frame, vulnerability is also known as the attack surface.
http://en.wikipedia.org/wiki/Vulnerability_(computing)
About me
I’m si!ence.gh0st. Everything is vulnerable. Do you agree that human is the most vulnerable part in cyber security.
Why Vulnerable Life?
si!ence.gh0st is a cyber security geek. Would like to share infosec related news and technique with others.
vulnerablelife 
so you just mirror holisticinfosec.blogspot.com?
the articles that here from multiple sources and with my own article sometimes. Thanks for visiting.