Malicious software or “malware” is the biggest network security threat facing financial institutions today. Cybercriminals target enterprises that hold a great deal of money or conduct a high volume of transactions on a daily basis. A network intrusion can cost an organization as much as $5 million. And, the damage to a company’s reputation can be irreparable. Statistics show that if a major security breach occurs against a U.S. enterprise, that organization has a 90 percent chance of going out of business within two years. This is particularly alarming considering that malware is currently the fastest-growing trend in the misuse of network resources.