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Top Six VoIP Security Issues and How to Prevent Them

Vulnerabilities in your VoIP security can place your organization’s data and systems at considerable risk.

Though conducting regular audits can be frustrating, it goes a long way in safeguarding VoIP systems. However, not knowing what to look for can make efforts to secure your servers and data networks a lot more challenging.

Fortunately, we are here to help.

In this article, we share six of the most common VoIP security issues and how to prevent them, highlighting the benefits of using VoIP-hosted PBX by TelcoSolutions.

Top Six VoIP Security Issues

Not every organization worries about the details of its private network. However, every business needs to be aware of the risks its network faces.

In fact, learning about potential security vulnerabilities is one of the best things you can do for your organization’s longevity.

Here are six VoIP security issues and the steps you can take to prevent them.

1. Denial of Service Attacks (DoS)

Denial of service attacks occur when an individual ties up your network’s bandwidth and overwhelms it with fraudulent user requests. Eventually, your network will be unable to handle the overload and will shut down.

Such attacks can severely impact your company’s day-to-day operations and, ultimately, its bottom line.

How to Prevent Them

Unfortunately, DoS attacks are becoming common since executing them has become cheaper and faster. However, you can implement various measures to protect your organization, including:

  • Hire a Dos specialist: It is essential to establish a partnership with a reliable DoS specialist. They have the experience needed to safeguard your system and help you get back on track when an attack occurs.
  • Identify attacks early: The sooner you can recognize suspicious activity, the sooner you can respond.
  • Keep a reserve of bandwidth: Though the reserve won’t stop a DoS attack, it can buy you the time you need to contact VoIP security experts.

2. Malware

Like other internet-based applications, Voice Over Internet Protocol (VoIP) systems are vulnerable to malware.

For instance, hackers could infect your system with a virus, making it unusable. In extreme cases, certain malware can give cyber criminals complete access to your system, enabling them to steal sensitive information with relative ease.

How to Prevent Them

The good news is that you don’t need special tools to protect your system from viruses and malware. The key lies in thinking ahead and developing a plan.

Consider implementing safety protocols, conducting routine audits, and ensuring your employees always comply with security measures. Monitoring traffic and using antivirus software and firewalls are other excellent ways of avoiding the damage malware causes.

3. Vishing

VoIP vishing attacks seek to solicit a victim’s sensitive information through voicemail messages.

Picture one of your employees getting a call requesting them to visit a link to update their password. Your employee looks at the number, recognizes it, and decides to follow the instructions, not knowing an attacker spoofed the ID.

Before they know it, the employee has provided the attacker access to sensitive information that could compromise your organization.

How to Prevent Them

The best way to protect your company from vishing scams is to always verify incoming call requests, including those that seem to be coming from within.

Additionally, educate your employees on the dangers of disclosing sensitive information over the phone without their supervisor’s expressed consent. You should also train your agents to ask for contact numbers and then call back as an extra layer of VoIP security.

4. Call Tampering

Call tampering happens when a cybercriminal disrupts ongoing calls by delaying data transmissions or sending large amounts of data along the call path. These disruptions result in choppy connections and extended periods of silence, hindering your ability to conduct business.

How to Prevent Them

The first step to protecting your telephony operations from such attacks is to enhance your authentication and encryption efforts.

For instance, your phones should have strong passwords and authentication codes. Additionally, ensure to encrypt all voice streams you send and receive.

5. VoIP Service Theft

Besides stealing sensitive information or compromising your network, attackers can also steal VoIP services. Once an attacker gains access to your VoIP phone system, they can use the service freely and leave you to cover the costs.

For instance, they can employ toll fraud, where they artificially generate high volumes of international calls to premium rate numbers and collect the revenue. Others may steal your billing information and use it to purchase expensive services.

How to Prevent Them

Fortunately, you can put several measures in place to protect your system from VoIP service theft, such as:

  • Using strong passwords
  • Updating your system’s software
  • Limiting access to only the employees who need the services
  • Monitoring off-hours usage spikes and investigating when necessary
  • Implementing time-bound international calling spending limits

6. Eavesdropping

Your company likely transmits sensitive information over the phone. For instance, your employees could ask customers for their credit card data and address.

Picture the damage an attacker could cause if they were to get access to such data.

How to Prevent Them

One thing you can do to prevent eavesdropping is to ensure your calls have end-to-end encryption. In such a case, even if a hacker breaks into your system, they will be unable to decipher the data you transmit.

Secure Your VoIP Communication with TelcoSolutions

While security threats are an ever-present nightmare, you can take steps to safeguard your organization. Setting yourself up with a reliable VoIP service provider helps shield you from VoIP security risks that threaten to ruin your business.

At TelcoSolutions, we provide customized solutions that promise to not only streamline your communication but also safeguard your data.

We offer hosted VoIP PBX services that protect your critical systems from attacks and help keep your company operations on track. Furthermore, thanks to the built-in redundancies our data centers have, you can rest easy knowing your information is safe.

Get in touch with us at TelcoSolutions at 800-546-9810 to enjoy personalized VoIP security solutions from one of the world’s top VoIP providers.

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