Tim Wilson at darkreading.com argues about the value-added of Threat Intelligence services and how critical such sources have become to any organization. Tim suggests five important questions to ask before choosing a threat intelligence service: How many sources does the threat intelligence service pull from? How frequently is the threat intelligence updated? How are the threats evaluated? How is the data formatted? Can the threat data be correlated with information that the enterprise already has about its security posture?
I would include one more question to the above which is: How is the threat intelligence stored and delivered to my organization? As some of the information may be highly sensitive and critical I would seek that some form of encryption is enforced. If this information falls in the wrong hands then it could potentially expose vulnerabilities within my organization IT infrastructure to third-parties!