Information Security Overview 1- Definition - Information security is a state of well-being of information and infrastructure in which the possibility of theft, tampering, and disruption of information and services is kept low. 2- Essential terminology Hack value – is the notion among hackers that something is worth doing or is interesting. Vulnerability – is the existence of a weakness (design or implementation error) that can lead to an unexpected event compromising the security of the system. Exploit – is a breach of an IT system security through vulnerabilities.Payload – is the part of an exploit code that performs an intended malicious action. Zero-Day attack – is an attack that exploits the computer vulnerability before software engineer releases a patch. Daisy Chaining – it involves gaining access to a network and /or computer and then using the same information to gain access to multiple networks and computers that contains desirable informatio...