As Linux users we have some inherent advantages over our fellow Windows users when it comes to security (or lack there of). Hackers, rather like gamblers, use the laws of odds and averages in their endeavors to find vulnerable computer systems to break into. They will typically target the types of systems that have the most security vulnerabilities. They will also mostly focus attention on areas where there are the most opportunities for unprotected systems – in other words the types are system that are most common on the internet. In both these cases Windows is the predominant operating system. In security circles they say Windows has a larger “surface area” to attack both in terms of vulnerabilities and numbers of systems.
Wiki style Linux security and development. If you want to know how to hack vulnerable systems, this is the encyclopedia. Linux Security for Beginners – Security and Linux