Cybereason researchers identified three clusters of activity associated with China-linked threat actors that carried out a series of attacks against networks of at least five major telecommunications companies located in South Asia since 2017. “The goal of the attackers behind these intrusions was to gain and maintain continuous access to telecommunication providers and to facilitate cyber espionage by collecting sensitive information, compromising high-profile business assets such as the billing servers that contain Call Detail Record (CDR) data, as well as key network components such as the Domain Controllers, Web Servers and Microsoft Exchange servers,” states the report published by Cybereason….