Symantec and Kaspersky Lab released research on an advanced persistent threat (APT) dubbed Regin. Regin fundamentally shifts the economics and timelines of APT development and deployment in the attackers favor. Unlike earlier generations of malware or espionage tools, Regin can be tailored after deployment to exploit targets of opportunity. The most sophisticated and versatile instantiation of the modular architecture concept is found in a class of products known as service oriented architecture (SOA) middleware platforms.”]
Source: https://www.darkreading.com/attacks-breaches/why-regin-malware-changes-threatscape-economics