Tag Archive for: cellular

Ukrainian cellular and Internet still out, 1 day after suspected Russian cyberattack


A service center for
Enlarge / A service center for “Kyivstar”, a Ukrainian telecommunications company, that provides communication services and data transmission based on a broad range of fixed and mobile technologies.

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Ukrainian civilians on Wednesday grappled for a second day of widespread cellular phone and Internet outages after a cyberattack, purportedly carried out by Kremlin-supported hackers, hit the country’s biggest mobile phone and Internet provider a day earlier.

Two separate hacking groups with ties to the Russian government took responsibility for Tuesday’s attack striking Kyivstar, which has said it serves 24.3 million mobile subscribers and more than 1.1 million home Internet users. One group, calling itself Killnet, said on Telegram that “an attack was carried out on Ukrainian mobile operators, as well as on some banks,” but didn’t elaborate or provide any evidence. A separate group known as Solntsepek said on the same site that it took “full responsibility for the cyberattack on Kyivstar” and had “destroyed 10,000 computers, more than 4,000 servers, and all cloud storage and backup systems.” The post was accompanied by screenshots purporting to show someone with control over the Kyivstar systems.

In the city of Lviv, street lights remained on after sunrise and had to be disconnected manually, because Internet-dependent automated power switches didn’t work, according to NBC News. Additionally, the outage prevented shops throughout the country from processing credit payments and many ATMs from functioning, the Kyiv Post said.

The outage also disrupted air alert systems that warn residents in multiple cities of incoming missile attacks, a Ukrainian official said on Telegram. The outage forced authorities to rely on backup alarms.

“Cyber ​​specialists of the Security Service of Ukraine and ‘Kyivstar’ specialists, in cooperation with other state bodies, continue to restore the network after yesterday’s hacker attack,” officials with…

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Mobile Network Vulnerabilities Affecting All Cellular Generations Since 2G


It has been reported that researchers have disclosed security vulnerabilities in handover, a fundamental mechanism that undergirds modern cellular networks, which could be exploited by adversaries to launch denial-of-service (DoS) and man-in-the-middle (MitM) attacks using low-cost equipment. The “vulnerabilities in the handover procedure are not limited to one handover case only but they impact all different handover cases and scenarios that are based on unverified measurement reports and signal strength thresholds,” researchers Evangelos Bitsikas and Christina Pöpper from the New York University Abu Dhabi said in a new paper. “The problem affects all generations since 2G (GSM), remaining unsolved so far.”

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Sierra Wireless offers its customers 5G cellular wireless connectivity for their business-critical apps


Sierra Wireless launched its 5G managed network service in the United States, offering customers the speed and ultra-low latency of 5G cellular wireless connectivity for their business-critical applications.

Sierra Wireless’ fully managed network services provide end-to-end broadband solutions for permanent, temporary, and back-up connectivity in retail, food and beverage, healthcare, digital signage, kiosk/POS, and distance e-learning applications. These turnkey solutions offer simple, cost-effective, and reliable internet connectivity with no upfront equipment purchase cost, guaranteed uptime, and seamless management, with accountability from one point of contact.

“With cloud-based management and reporting, and cross-carrier pooling ensuring the best network coverage at all times, Sierra Wireless’ 5G managed network service can be used with our world leading XR Series 5G routers,” said Tom Mueller, Vice President of Product Enterprise Networking, Sierra Wireless.

“In addition, it also offers plan flexibility with a rental option lowering initial investment, and can reduce the cost of using, managing, and operating a connectivity network internally. With 5G changing the business landscape, Sierra Wireless is enabling customers to transform their digital operations, and to take advantage of 5G’s ground-breaking new capabilities with the availability of our new managed network services.”

With their unique service-level agreement, Sierra Wireless’ managed network services ensure business-critical functions with guaranteed connectivity uptime and constant monitoring of network performance managed 24/7/365 by Sierra’s team of wireless professionals. The services also include use of Sierra Wireless’ hardware and software, with updates for security and firmware, as well as an always-on out-of-band management link to the AirLink Management Service (ALMS). This unique capability ensures the ongoing operational success of 5G deployments, simplifies operations, and reduces downtime.

Sierra Wireless’ managed network services are available in three options:

  • Basic, the cost-effective backup cellular solution for non-critical systems.
  • Premium, including all the…

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ESET Mobile Security for Android: One app to protect them all