Telecom Security | Breaking Cybersecurity News | The Hacker News

A group of academics has disclosed details of over 100 security vulnerabilities impacting LTE and 5G implementations that could be exploited by an attacker to disrupt access to service and even gain a foothold into the cellular core network. The 119 vulnerabilities , assigned 97 unique CVE identifiers, span seven LTE implementations – Open5GS , Magma , OpenAirInterface , Athonet , SD-Core , NextEPC , srsRAN – and three 5G implementations – Open5GS, Magma, OpenAirInterface, according to researchers from the University of Florida and North Carolina State University. The findings have been detailed in a study titled "RANsacked: A Domain-Informed Approach for Fuzzing LTE and 5G RAN-Core Interfaces." "Every one of the >100 vulnerabilities discussed below can be used to persistently disrupt all cellular communications (phone calls, messaging and data) at a city-wide level," the researchers said. "An attacker can continuously crash the Mobility Management En...

The U.S. Treasury Department's Office of Foreign Assets Control (OFAC) has imposed sanctions against a Chinese cybersecurity company and a Shanghai-based cyber actor for their alleged links to the Salt Typhoon group and the recent compromise of the federal agency. "People's Republic of China-linked (PRC) malicious cyber actors continue to target U.S. government systems, including the recent targeting of Treasury's information technology (IT) systems, as well as sensitive U.S. critical infrastructure," the Treasury said in a press release. The sanctions target Yin Kecheng, who is assessed to have been a cyber actor for over a decade and affiliated with China's Ministry of State Security (MSS). Kecheng, per the Treasury, was associated with the breach of its own network that came to light earlier this month. The incident involved a hack of BeyondTrust's systems that allowed the threat actors to infiltrate some of the company's Remote Support SaaS inst...

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A new China-linked cyber espionage group has been attributed as behind a series of targeted cyber attacks targeting telecommunications entities in South Asia and Africa since at least 2020 with the goal of enabling intelligence collection. Cybersecurity company CrowdStrike is tracking the adversary under the name Liminal Panda , describing it as possessing deep knowledge about telecommunications networks, the protocols that undergird telecommunications, and the various interconnections between providers. The threat actor's malware portfolio includes bespoke tools that facilitate clandestine access, command-and-control (C2), and data exfiltration. "Liminal Panda has used compromised telecom servers to initiate intrusions into further providers in other geographic regions," the company's Counter Adversary Operations team said in a Tuesday analysis. "The adversary conducts elements of their intrusion activity using protocols that support mobile telecommunicati...

A recently disclosed security flaw in OSGeo GeoServer GeoTools has been exploited as part of multiple campaigns to deliver cryptocurrency miners, botnet malware such as Condi and JenX, and a known backdoor called SideWalk. The security vulnerability is a critical remote code execution bug (CVE-2024-36401, CVSS score: 9.8) that could allow malicious actors to take over susceptible instances. In mid-July, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added it to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The Shadowserver Foundation said it detected exploitation attempts against its honeypot sensors starting July 9, 2024. According to Fortinet FortiGuard Labs, the flaw has been observed being used to deliver GOREVERSE, a reverse proxy server designed to establish a connection with a command-and-control (C2) server for post-exploitation activity. These attacks are said to target IT service providers in In...

American telecom service provider AT&T has confirmed that threat actors managed to access data belonging to "nearly all" of its wireless customers as well as customers of mobile virtual network operators (MVNOs) using AT&T's wireless network. "Threat actors unlawfully accessed an AT&T workspace on a third-party cloud platform and, between April 14 and April 25, 2024, exfiltrated files containing AT&T records of customer call and text interactions that occurred between approximately May 1 and October 31, 2022, as well as on January 2, 2023," it said . This comprises telephone numbers with which an AT&T or MVNO wireless number interacted – including telephone numbers of AT&T landline customers and customers of other carriers, counts of those interactions, and aggregate call duration for a day or month. A subset of these records also contained one or more cell site identification numbers , potentially allowing the threat actors to triang...

Ukraine's biggest telecom operator Kyivstar has  become  the victim of a " powerful hacker attack ," disrupting customer access to mobile and internet services. "The cyberattack on Ukraine's #Kyivstar telecoms operator has impacted all regions of the country with high impact to the capital, metrics show, with knock-on impacts reported to air raid alert network and banking sector as work continues to restore connectivity," NetBlocks  said  in a series of posts on X (formerly Twitter). Kyivstar, which is owned by Dutch-domiciled multinational telecommunication services company VEON,  serves  nearly 25 million mobile subscribers and more than 1 million home internet customers. The company said the attack was "a result of" the war with Russia and that it has notified law enforcement and special state services. While Kyivstar is working to restore the services, the internet watchdog noted that the telco is largely offline. That said, Kyivstar has yet ...

The telecom industry has always been a tantalizing target for cybercriminals. The combination of interconnected networks, customer data, and sensitive information allows cybercriminals to inflict maximum damage through minimal effort. It's the breaches in telecom companies that tend to have a seismic impact and far-reaching implications — in addition to reputational damage, which can be difficult to measure, telecoms are often at the receiving end of government fines for their cybersecurity and privacy failures. There are few industries in the world that collect as much sensitive data as telecom companies. In recent years, telecom companies have accelerated their digital transformation, shedding legacy systems and reducing costs. These changes, coupled with the need for stronger collaboration with third-party vendors, have led them to SaaS applications to handle their CRM. Today, telecoms are using SaaS apps for billing, HR, call management, field operations management, tracking ca...