It is always easier to destroy than it is to build, easier to harm than to heal. It will always be easier for attackers to burrow themselves into the criminal underground and from there carefully and precisely worm their way past enterprise defenses, ultimately taking root next to data stores and syphoning off valuable information until they grow fat with the financial benefits of their labors.
The enterprise is in an arms race with cyber criminals. Organizations must constantly build up defenses in an attempt to maintain the status quo if not shift the balance of power in their favor.
