VoIP systems are essential for most businesses today, offering efficient and economical communication. But, like any technology connected to the internet, they are also an attractive target for hackers. If your VoIP system is not well protected, cybercriminals could take advantage and cause you significant financial losses. Here are three common attacks on VoIP systems and how you could fall victim if you don’t take action. <\/p>\n\n
Case:<\/strong><\/p>\n\n Imagine that you are a small business with a VoIP system to call international customers. One night, a hacker gains access to the system due to weak passwords and starts making calls to premium numbers in remote countries (think “special rate” lines). Those calls generate high costs per minute, and the hacker receives a commission from those numbers. The next morning this company finds itself with a very high telephone bill that its supplier does not cover. <\/p>\n\n How they do it:<\/strong><\/p>\n\n Hackers look for systems that are misconfigured or have simple passwords such as “123456” or “admin.”<\/p>\n\n Once inside, they redirect calls to international numbers or special rate lines.<\/p>\n\n Impact:<\/strong><\/p>\n\n Exorbitant bills in a matter of hours or days.<\/p>\n\n Difficulty in claiming reimbursements from the supplier, as the systems were vulnerable.<\/p>\n\n How to protect yourself:<\/strong><\/p>\n\n Case:<\/strong><\/p>\n\n A law firm relies on its VoIP system to communicate with clients about sensitive cases. One day, a hacker intercepts calls between the office and a client using an attack known as “man-in-the-middle.” Now, the hacker has access to confidential information that they can use to blackmail the firm or sell it to competitors. <\/p>\n\n How they do it:<\/strong><\/p>\n\n Hackers exploit insecure Wi-Fi networks or VoIP systems without encryption.<\/p>\n\n They insert their equipment between the user and the VoIP provider to capture voice traffic.<\/p>\n\n Impact:<\/strong><\/p>\n\n How to protect yourself:<\/strong><\/p>\n\n Case:<\/strong><\/p>\n\n Manager of a call center that uses VoIP to serve hundreds of customers a day.<\/p>\n\n One day, the phones stop working. No one can make or receive calls because a hacker is launching a denial-of-service (DoS) attack, saturating the VoIP server with fake traffic. While the technicians try to solve the problem, the manager makes a very large amount of money in sales and his team is paralyzed. <\/p>\n\n How they do it:<\/strong><\/p>\n\n Hackers send a massive number of requests to the VoIP server, rendering it inoperative. Sometimes, they demand a ransom to stop the attack. <\/p>\n\n Impact:<\/strong><\/p>\n\n How to protect yourself:<\/strong><\/p>\n\n Attacks on VoIP systems can not only be costly, but they can also damage your reputation and the trust of your customers. The good news is that these risks are avoidable if you take the right steps. Make sure to use strong passwords, enable encryption, set up restrictions, and keep your system up to date. <\/p>\n\n At Tecsens, we can help you protect against these risks with our VoIP systems backed up and designed to ensure maximum security and performance.<\/strong> We take care of setting up your system optimally, implementing the necessary security measures and offering you ongoing support so that you can focus on what really matters: growing your business. Contact us and let our experts advise you! <\/p>\n\n\n
2. Call Interception (Eavesdropping)<\/strong><\/h2>\n\n
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3. Denial of Service (DoS)<\/strong><\/h2>\n\n
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