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Angola’s largest telecommunications operator, Unitel, suffered a major cyberattack just hours before making its landmark debut on the Angolan Debt and Securities Exchange (BODIVA), disrupting voice, mobile data and internet services for millions of subscribers at a critical moment in the company’s history.
The attack, which occurred in the early hours of July 28, affected more than 21 million customers, leaving businesses and consumers without access to key communication services as the telecom giant prepared for Angola’s biggest-ever public share offering.
Despite the disruption, Unitel’s stock market listing proceeded as scheduled on July 29, with the Angolan government successfully selling a 15% stake in the company and raising approximately 300.3 billion kwanzas (about $329 million) through the country’s largest initial public offering to date.
Cyberattack Hits Critical Telecom Infrastructure
According to Unitel, the cyber incident was detected at approximately 2:20 a.m. local time on July 28, prompting the immediate activation of its cybersecurity and incident response teams.
The company confirmed that the attack temporarily disrupted voice calls, mobile internet and data services across its network, impacting millions of subscribers who rely on Unitel for everyday communication, business operations and digital services.
While recovery efforts began immediately, the telecom operator has not disclosed the identity of those responsible for the attack. It also said investigations remain ongoing to determine the full scope of the incident, including whether any customer information was compromised.
Historic Listing Proceeds Despite Service Outage
The cyberattack coincided with one of the most significant milestones in Angola’s capital market history.
Unitel became the first non-financial company to list on BODIVA, as part of President João Lourenço’s PROPRIV privatisation programme, an initiative designed to reduce government ownership of major state-backed enterprises while deepening the country’s capital markets.
Investor appetite remained strong despite the network disruption. The public offer, which closed on July 24, was reportedly oversubscribed by more than 20%, highlighting sustained confidence in the telecommunications giant and Angola’s ongoing economic reforms.
Although the listing moved ahead successfully, the cyberattack shifted attention away from what would have been a celebratory market debut, forcing the company to focus on restoring services and reassuring both customers and investors.
Cybersecurity Emerges as Key Investor Concern
Industry analysts say the incident highlights the growing importance of cybersecurity in evaluating listed companies, particularly those operating critical national infrastructure.
Beyond delivering strong financial results, publicly traded telecommunications firms are increasingly expected to demonstrate resilience against cyber threats capable of disrupting essential services and damaging investor confidence.
For Unitel, the timing of the attack underscored how operational security has become a critical component of corporate governance, especially as digital infrastructure plays an increasingly central role in modern economies.
Telecom Operators Face Rising Cyber Risks
The incident also reflects a broader trend across Africa’s rapidly expanding digital economy.
As governments accelerate broadband expansion, digital financial services and e-government initiatives, telecommunications operators are becoming custodians of increasingly critical infrastructure, making them attractive targets for cybercriminals.
Modern telecom networks support far more than traditional phone calls, serving as the backbone for internet connectivity, mobile money platforms, enterprise communications and numerous digital public services. A successful attack on such infrastructure can therefore have widespread economic and social consequences.
Cybersecurity experts have repeatedly warned that as digital transformation accelerates across the continent, attacks on telecom providers are likely to become more frequent and increasingly sophisticated.
A Wake-Up Call for Africa’s Digital Infrastructure
While Unitel says service restoration efforts remain ongoing and trading of its newly listed shares has continued as planned, the incident serves as a reminder that cybersecurity is now inseparable from digital infrastructure development.
As African governments continue privatising strategic assets and investing heavily in digital connectivity, operators will face growing pressure to strengthen cyber resilience alongside network expansion.
For investors, the episode reinforces the idea that financial performance alone is no longer sufficient when assessing major technology and telecommunications companies. The ability to anticipate, withstand and recover from cyber threats is becoming just as important as revenue growth and market share.
For telecom operators across Africa, Unitel’s experience sends a clear message: in an increasingly digital economy, protecting networks has become every bit as important as building them.
