Connect with us

Telecom

Hackers Could Decrypt Your GSM Phone Call

Published

on

Kindly share this post

Researchers have discovered a flaw in the GSM standard used by AT&T and T-Mobile that would allow hackers to listen in.

 

Researchers from BlackBerry at DefCon security conference in Las Vegas, USA, presented an attack that can intercept GSM calls as they’re transmitted over the air and decrypt them to listen back to what was said.

 

And the vulnerability has been around for decades.

 

Most mobile calls around the world are made over the Global System for Mobile Communications standard; in the US, GSM underpins any call made over AT&T or T-Mobile’s network.

 

Regular GSM calls aren’t fully end-to-end encrypted for maximum protection, but they are encrypted at many steps along their path, so random people can’t just tune into phone calls over the air like radio stations.

 

The researchers found, though, that they can target the encryption algorithms used to protect calls and listen in on basically anything.

 

“GSM is a well documented and analyzed standard, but it’s an aging standard and it’s had a pretty typical cybersecurity journey,” says Campbell Murray, the global head of delivery for BlackBerry Cybersecurity.

 

“The weaknesses we found are in any GSM implementation up to 5G. Regardless of which GSM implementation you’re using there is a flaw historically created and engineered that you’re exposing.”

 

The problem is in the encryption key exchange that establishes a secure connection between a phone and a nearby cell tower every time you initiate a call.

 

This exchange gives both your device and the tower the keys to unlock the data that is about to be encrypted. In analyzing this interaction, the researchers realized that the way the GSM documentation is written, there are flaws in the error control mechanisms governing how the keys are encoded. This makes the keys vulnerable to a cracking attack.

 

“It’s a really good example of how the intention is there to create security, but the security engineering process behind that implementation failed.”

 

As a result, a hacker could set up equipment to intercept call connections in a given area, capture the key exchanges between phones and cellular base stations, digitally record the calls in their unintelligible, encrypted form, crack the keys, and then use them to decrypt the calls.

 

The findings analyze two of GSM’s proprietary cryptographic algorithms that are widely used in call encryption—A5/1 and A5/3.

 

The researchers found that they can crack the keys in most implementations of A5/1 within about an hour. For A5/3 the attack is theoretically possible, but it would take many years to actually crack the keys.

 

“We spent a lot of time looking at the standards and reading the implementations and reverse engineering what the key exchange process looks like,” BlackBerry’s Murray said.

 

“You can see how people believed that this was a good solution. It’s a really good example of how the intention is there to create security, but the security engineering process behind that implementation failed.”

 

The researchers emphasize that because GSM is such an old and thoroughly analyzed standard, there are already other known attacks against it that are easier to carry out in practice, like using malicious base stations, often called stingrays, to intercept calls or track a cellphone’s location.

 

Additional research into the A5 family of ciphers over the years has turned up other flaws as well. And there are ways to configure the key exchange encryption that would make it more difficult for attackers to crack the keys. But Murray says that the theoretical risk always remains.

 

Short of totally overhauling the GSM encryption scheme, which seems unlikely, the documentation for implementing A5/1 and A5/3 could be revised to make key interception and cracking attacks even more impractical. The researchers say that they are in the early phases of discussing the work with the standards body GSMA.

 

The trade association said in a statement to WIRED that, “Details have not been submitted to the GSMA under our coordinated vulnerability (CVD) programme. When the technical details are known to the GSMA’s Fraud and Security Group we will be better placed to consider the implications and the necessary mitigation actions.”

 

Though it may not be that surprising at this point that GSM has security issues, it’s still the cellular protocol used by the vast majority of the world. And as long as it’s around, real call privacy issues remain, too.


Kindly share this post

Nigeria CommunicationsWeek believes that technology makes life more exciting and helps improve the lives of people around Nigeria and indeed the world. So since 2007, we have devoted our energy to independent reportage of technology and how they affect lives.

Telecom

NCC Insists Telcos Must Compensate Subscribers for Poor Quality of Service

Published

on

Kindly share this post

Dr. Aminu Maida, executive vice chairman, Nigerian Communications Commission  (NCC), has insisted that telecommunications operators must compensate subscriber for poor quality of service after a facility tour of major telecommunications operators in Lagos yesterday.

NCC Insists Telcos Must Compensate Subscribers for Poor Quality of Service

The team comprises of Chief Idris Olorunnimbe the Chairman of the Governing Board of the Nigerian Communications Commission (NCC), EVC, Engr. Gbenga Adebayo, chairman, Association of Licensed Telecommunications Operators of Nigeria (ALTON) and other stakeholders visited MTN Nigeria, Globacom and Airtel Nigeria.

Earlier this week, the commission directed Mobile Network Operators (MNOs) to provide compensation to subscribers whose network quality of service experience is below specified targets within certain locations.

In a statement signed by Nnenna Ukoha, head, Public Affairs Department, NCC, the commission noted that its position is that subscribers should not be made to bear the full burden of service disruptions where operators fail to meet prescribed standards of service delivery.

Speaking after the facility tour the EVC, said: “We are in a situation where Nigerians are yearning for better service, but better service requires infrastructure. We are not where we want to be or where we need to be, but from what I’ve seen today, I am reassured that the operators are continuing to invest. I urge Nigerians to be a little bit patient while these investments are made, so that we can address the infrastructure deficit that is required to improve service for Nigerians.

“I wasn’t expecting that a tour like this would change that directive. We looked at it and we said the fairest thing to do was for subscribers to be compensated. This is not to say that the operators have not tried. Service has improved. The data shows that our demand is also increasing at a rate faster than the infrastructure is being built. So Nigerians have to be a little bit patient. From what I’ve seen today and all the work that has been done, I’m confident that gap will be close shortly”.

Chief Idris Olorunnimbe, chairman of the Governing Board of the Nigerian Communications Commission (NCC), added: “From what we have seen, and what has been done. We have been told in detail what is to come. And I mean, just like the EVC said, all we need is a bit more patience, better service, deeper penetration is assured based on everything that we’ve seen, and everything we have heard.

“It’s also important to commend our operators. The infrastructure that we’ve seen is comparable with any infrastructure from any telecom operator anywhere in the world, and Nigeria is not behind, and based on what we’ve also seen in terms of their plans for expansion, Nigeria will always be able to compete with any other country in the world.

” More so, drop calls are not deliberate. They are caused by a few things. One of it is fiber cut and attacks or vandalization of towers and other infrastructure. But now, it has reduced. We have seen they’ve shown us data today that shows a significant reduction. It will continue to reduce. As the critical national infrastructure program deepens and we’re also about to introduce an accountability framework of “when fiber is damaged, you must fix it”. That way we think that people will be more responsible with their constructions that breach telecom infrastructure. Then we can keep those incidents to the barest minimum, drop calls would also reduce.

“However, when calls drop, the networks also lose so it’s not in their interest for your calls to drop or for you to experience frustration when you use the service, because the more reliable it is, the longer you spend on it, the longer you spend on it, the more money they’re able to make. So, they are also doing their best in terms of ensuring that these incidents are reduced to the barest minimum”.


Kindly share this post
Continue Reading

Telecom

NITDA Urges Joint Action to Drive Nigeria’s Digital Innovation

Published

on

Kindly share this post

Kashifu Inuwa, the Director General of the National Information Technology Development Agency (NITDA), has underscored the importance of collaboration between government institutions and emerging startups as a catalyst for Nigeria’s digital transformation and national development.

Speaking at the Nigerian Satellite Week 2026 in Abuja, themed “Harnessing Space Technology for an Extraordinary Nigeria,” Inuwa urged stakeholders to embrace partnerships as a pathway to innovation and impact.

“Take a good step, and you can make a difference,” he said, emphasizing the need to translate ideas into tangible outcomes through collective effort.

The NITDA boss, represented by the Director of Stakeholder Management and Partnerships, Aristotle Onumo, during his presentation on “Enhancing collaboration between government agencies and emerging start-ups”, outlined four guiding principles for driving transformation: enabling the ecosystem rather than controlling it; prioritising networks over institutions; developing talent while supporting innovation and adopting practical solutions; and focusing on platforms rather than isolated projects.

To illustrate the power of digital innovation, Inuwa shared the story of a rural farmer whose productivity challenges ranging from unstable rents to failed loans were overcome through access to digital tools and networks. He explained that such incremental interventions can scale into broader economic gains, ultimately contributing to national infrastructure like satellite systems.

“This is the power of space technology, and it shows why events like this are so important,” he noted.

Highlighting the evolving role of space technology, Inuwa observed that startups are increasingly driving innovation across telecommunications, navigation, security, and cloud services. Once dominated by global superpowers, the sector is now emerging as a key economic driver, with Nigeria’s “Sunrise Packet” projected to contribute over $1.5 billion to the economy by 2030.

“Innovation without adoption is wasted,” he added, stressing the critical role of government in enabling start-ups to scale through supportive policies, infrastructure, and incentives.

According to him, developmental regulation should focus on creating markets, orchestrating ecosystems, and delivering public value rather than stifling innovation. He pointed to several initiatives supporting the growth of Nigeria’s innovation ecosystem, including the Digital Start-Up Act, Idea Hatch, and the National Digital Leadership Programme, all designed to empower young innovators and connect them to global opportunities.

He further highlighted platforms such as GITEX Africa, GITEX Nigeria, and Digital Nigeria, which provide visibility for start-ups and attract investment, partnerships, and mentorship.

Inuwa concluded with a strong call for collaboration among government, start-ups, non-governmental organisations, and investors, describing Nigeria’s youth as the country’s greatest asset.

“If we are going to create a digital Nigeria, we must collaborate,” he said.

Also speaking at the event, the Minister of Communications, Innovation and Digital Economy,  Tijani, described Nigeria’s satellite infrastructure as central to the nation’s digital future.

“Nigeria is the only West African country with its own satellite. NigComSat provides critical connectivity and resilience, benefiting not just Nigeria but the entire region,” he said.

Tijani disclosed that President Bola Ahmed Tinubu has approved the acquisition of NigComSat-2A and NigComSat-2B, a move expected to significantly enhance the country’s space capabilities.

He stressed, however, that infrastructure alone is not sufficient.

“What truly matters is how we leverage this technology to improve agriculture, education, security, and business operations,” he said.

The Minister also highlighted key government investments, including a ₦12 billion digital economy research cluster fund under Project Bridge, which will support academics and researchers nationwide. He added that Nigeria is expanding its digital backbone through 90,000 kilometres of fibre optic cables, nearly 4,000 telecom towers in underserved communities, and new satellite deployments to strengthen regional connectivity across countries such as Cameroon, Niger, Chad, Burkina Faso, and the Republic of Benin.

“The talent, ideas, and energy are all here in Nigeria. It is up to us to turn them into real outcomes for our people and the economy,” Tijani added.

The Nigerian Satellite Week continues to provide a strategic platform for collaboration among government, start-ups, academia, and the private sector, fostering innovation and reinforcing Nigeria’s leadership in Africa’s digital and space economy.

Welcoming participants, the Managing Director of Nigerian Communications Satellite Limited (NIGCOMSAT), Jane Nkechi Egerton-Ideyen, said Nigeria’s space programme is entering a new phase marked by deliberate and focused growth.

She pointed to strengthened institutional capacity, expanding partnerships, and clear economic gains, noting that the agency’s revenue grew from less than $650 million in 2023 to over $2 billion in 2025. She attributed this surge to key reforms, new commercial deals, and increasing demand for satellite broadband services across the African continent.

Egerton-Ideyen also disclosed that Nigeria has launched seven space assets in just over two decades, adding that the country is shifting its focus from prestige-driven initiatives to practical outcomes—enhancing connectivity, improving livelihoods, and promoting inclusive development.

She further revealed that more than 500 young Nigerians received training in satellite technology within the past year, while over 50 startups have benefited from NIGCOMSAT’s accelerator programme.


Kindly share this post
Continue Reading

Telecom

Oracle Corporation Axes 30,000 Workers in Brutal AI Shake-Up

Published

on

Kindly share this post

Oracle Corporation has begun laying off more than 30,000 employees worldwide as the software giant accelerates its shift toward artificial intelligence (AI) and cost optimisation, according to reports.
Oracle Corporation Axes 30,000 Workers in Brutal AI Shake-Up

Oracle Corporation

The layoffs, which started on Tuesday, have affected workers across multiple regions, including the United States, India, Canada and Mexico. Employees ranging from software engineers to account executives and program managers disclosed on LinkedIn that they had received termination notices.

Sources indicate that dismissal emails, sent from “Oracle Leadership” early in the morning, cited “broader organisational change” as the reason for the job cuts—widely interpreted as part of the company’s restructuring to prioritise AI-driven operations.

Local reports suggest that about 12,000 employees in India alone have been impacted, making the development one of the largest workforce reductions in the company’s history.

With a global workforce of approximately 162,000 as of May 2025, the layoffs could affect about 18 per cent of Oracle’s staff.

In its communication to affected workers, the company stated that roles were being eliminated after a review of “current business needs,” adding that impacted employees would receive severance packages in line with company policy.

The move positions Oracle among a growing list of global technology firms downsizing traditional roles while ramping up investments in artificial intelligence infrastructure.

As part of this transition, Oracle Corporation, alongside OpenAI and SoftBank Group, last year announced a $500 billion AI infrastructure initiative known as Stargate.

The initiative is aimed at expanding data centre capacity to support the massive computing requirements of AI systems, which rely heavily on large-scale data processing and storage.

Oracle has also strengthened its position in the AI ecosystem through collaboration with Nvidia, a leading manufacturer of AI chips.

Industry analysts say the development underscores a broader transformation within the tech sector, where companies are reallocating resources from legacy operations to AI-focused innovation.

They note that while the shift is expected to enhance long-term competitiveness, it also raises concerns about job displacement and the future of work in the global technology industry.


Kindly share this post
Continue Reading

Trending