As VoIP becomes ever more popular, the security of these systems becomes more of a concern. VoIP can be vulnerable to a number of attacks due to the nature of VoIP calls. How can you help secure yourself against these types of attacks? As VoIP becomes ever more popular, the security of these systems becomes more of a concern. VoIP can be vulnerable to a number of attacks due to the nature of VoIP calls. In short, VoIP traffic flows across the Internet in unencrypted packets, which means anyone that has access to the network between sender and recipient can intercept these packets