Hackers and secret services don’t hack a server like in the movies anymore. It is a lot easier: Hundreds of new vulnerabilities appear daily and hackers use fully automatic tools to find them. As it is very easy to handle such tools, the amount of potential sources of attacks is tremendous.
The only protection against those attacks is by executing professional penetration tests periodically. Those are very costly and time consuming and offer just a current snapshot. Five minutes after the test the security status can be a completely different one! Further more there are questions like:
Therefore IT security is becoming a constantly increasing problem – for all of us!