![]() Attackers can inflate traffic by calling the premium-rate numbers they own from the hacked VoIP phone system. “In addition, attackers can leverage this attack, creating further damage like shutting down VoIP services, and for utilizing system resources for purposes like cryptomining.”Ī common practice associated with these attacks is known as international revenue share fraud (IRSF). ![]() “By manipulating the VoIP system to conduct outgoing calls, organizations were exposed to pay extraordinary charges on their telephone expenses,” he said. ![]()
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