Defenses of any sort, virtual or physical, are a means of forcing your attacker to attack you on your terms, not theirs. As we build more elaborate defenses within information security, we force our attacker’s hand. For instance, in many cases, implementing multi-factor authentication systems just forces the attacker to go after that system directly to achieve their goals. Take the breach at RSA, for example. It has been attributed to attackers who needed the SecurID information to go after their real targets in the defense industry.