VOIP hacking | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers today took the wraps off an on-going cyber fraud operation led by hackers in Gaza, West Bank, and Egypt to compromise VoIP servers of more than 1,200 organizations across 60 countries over the past 12 months. According to findings published by Check Point Research, the threat actors — believed to be located in the Palestinian Gaza Strip — have targeted Sangoma PBX, an open-sourced user interface that's used to manage and control Asterisk VoIP phone systems, particularly the Session Initiation Protocol (SIP) servers. "Hacking SIP servers and gaining control allows hackers to abuse them in several ways," the cybersecurity firm noted in its analysis. "One of the more complex and interesting ways is abusing the servers to make outgoing phone calls, which are also used to generate profits. Making calls is a legitimate feature, therefore it's hard to detect when a server has been exploited." By selling phone numbers, call plans, and...

Cybersecurity researchers have discovered an entirely new kind of Linux malware dubbed "CDRThief" that targets voice over IP (VoIP) softswitches in an attempt to steal phone call metadata. "The primary goal of the malware is to exfiltrate various private data from a compromised softswitch, including call detail records ( CDR )," ESET researchers said in a Thursday analysis . "To steal this metadata, the malware queries internal MySQL databases used by the softswitch. Thus, attackers demonstrate a good understanding of the internal architecture of the targeted platform." Softswitches (short for software switches) are generally VoIP servers that allow for telecommunication networks to provide management of voice, fax, data and video traffic, and call routing. ESET's research uncovered that CDRThief targeted a specific Linux VoIP platform, namely the VOS2009 and 3000 softswitches from Chinese company Linknat, and had its malicious functionalit...

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A California-based Voice-Over-IP (VoIP) services provider VOIPO has accidentally left tens of gigabytes of its customer data, containing millions of call logs, SMS/MMS messages, and plaintext internal system credentials, publicly accessible to anyone without authentication. VOIPo is one of a leading providers of Voice-Over-IP (VoIP) services in the United States offering reseller VoIP, Cloud VoIP, and VoIP services to residentials and small businesses. Justin Paine , the head of Trust & Safety at CloudFlare, discovered an open ElasticSearch database last week using the Shodan search engine and notified the VOIPO's CTO, who then promptly secured the database that contains at least 4 years of data on its customers. According to Paine, the database contained 6.7 million call logs dating back to July 2017, 6 million SMS/MMS logs dating back to December 2015, and 1 million logs containing API key for internal systems. While the call logs included timestamp and duration o...

Security researchers have discovered a set of severe vulnerabilities in 4G LTE protocol that could be exploited to spy on user phone calls and text messages, send fake emergency alerts, spoof location of the device and even knock devices entirely offline. A new research paper [ PDF ] recently published by researchers at Purdue University and the University of Iowa details 10 new cyber attacks against the 4G LTE wireless data communications technology for mobile devices and data terminals. The attacks exploit design weaknesses in three key protocol procedures of the 4G LTE network known as attach, detach, and paging. Unlike many previous research, these aren't just theoretical attacks. The researchers employed a systematic model-based adversarial testing approach, which they called LTEInspector , and were able to test 8 of the 10 attacks in a real testbed using SIM cards from four large US carriers. Authentication Synchronization Failure Attack Traceability Attack Nu...