“Malware Hunter” Helps Researchers Find C&C Servers
C&C Discovery Service Launched by Shodan and Recorded Future
Recorded Future and Shodan announced on Tuesday the launch of Malware Hunter, a new crawler that allows security researchers to identify devices that act as botnet command and control (C&C) servers.
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Story added 2. May 2017, content source with full text you can find at link above.