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Network Infrastructure Magazine | Wednesday, February 03, 2021
Security is among the biggest concerns for businesses of all sizes; IT staff are striving to identify the vulnerabilities in their systems.
FREMONT, CA: Recently, the Voice over Internet Protocol (VoIP) phone systems have been identified as a possible source of substantial security challenges for the organizations as VoIP is a part of the mainstream technology. VoIP shares crucial infrastructure with the traditional Internet protocol (IP) data network; it seamlessly inherits all the data network's security vulnerabilities. Besides, VoIP has its security issues that come up from the new network protocols and components that it brings to the IT infrastructure space.
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Here are the VoIP security issues that a business should keep in mind.
Call Fraud: When unauthorized people hack into a VoIP system and take over, businesses lose time and money to call the fraudsters. They make illicit long-distance calls that boost the expenses and steal employee names, passwords, phone numbers, and other data to access private accounts and billing information. This type of fraud can result in identity theft and even corporate sabotage.
Denial of Service (DoS) Attack: This attack happens when the hackers flood a business's network server and consume all of the available bandwidth, preventing incoming and outgoing VoIP calls. The cybercriminals can also leverage this attack to secure remote control of critical servers within an IT environment and steal sensitive business and customer data.
Call Hijacking: This kind of attack sends "noise packets" to the VoIP calls, harming the quality, delaying the voice signals, and also altogether dropping calls. Cybercriminals can also intercept VoIP calls by altering the encryption key of a call's digital signature. This can trick the VoIP servers into believing that the call is still going on while the hacker does severe damage to the network.
Man-in-the-Middle Attacks: VoIP is particularly vulnerable to these kinds of attacks, in which a phreaker intercepts call-signaling SIP message traffic and makes the server believe that he or she is a participant on the call. Once the phreaker has this type of access, he or she can hijack calls through a redirection server and eventually penetrate a business's IT environment.
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