HD Moore's Law is a joke. And not a very funny one either being a pun and having a requirement of being very technical and requiring knowledge of the IT Security community just to get half way to understanding it. It usually requires the user of the term to explain why it is funny and that is a serious faux pas when it comes to jokes.
So, let me explain the joke. :)
Moore's Law is pretty well known. The majority of people know it as "computers will get faster each year" which is close enough to the actual definition as to be useful for making decisions such as "I don't need a PC right now, should I wait a bit?" The answer is "yes, if you wait then for the same amount of money you will spend now, in the future you can get a more powerful PC." Moore's Law.
(The actual law itself was coined by Gordon E. Moore from Intel who predicted that the number of transistors on a chip would double every 2 years.)
HD Moore created MetaSploit which is a framework for creating and running exploits. Being a framework, it is as clever as the person using it and can be used to break into anything with enough time and patience and understanding. However, it can also be used by someone with minimal knowledge and understanding to quickly break into a badly protected system.
This really divides attackers into two camps - dedicated and opportunistic. The controls to protect against both of them are very different but initially an organisation should be protected at the very least against opportunistic attackers. This is HD Moore's Law.
But the exploits available on Metasploit are always changing and the systems that can be attacked are expanding. There are modules available to attack PHP. This means that PHP falls into the "opportunistic" area of HD Moore's Law.
My question...finally....is this....
What level of patch does each and every type of software have to be at to avoid falling foul of HD Moore's Law?
Does anyone know?
Because, jokes aside, (and it wasn't a particularly good one to start with) knowing that an organisation is not at risk from opportunistic attacks would be useful - more so than knowing ISO compliance or that staff are deleted off the system within .578 microseconds of leaving the organisation.
Then more dedicated attackers can be targeted using the controls aimed at them.