A ransomware program known as Chimera has adopted a relatively unknown peer-to-peer messaging system to communicate with the criminals’ command-and-control server, making investigating the infrastructure more difficult, according to security researchers. The messaging system, known at BitMessage, is a communications system that allows messages to be encrypted, prevents spoofing and relieves the user of any need for key management. While the system is intended to help regular people secure their communications, criminals have adapted the software as well.
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