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Angola's Largest Telco Breached Hours Before IPO

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Why This Matters

The cyberattack on Angola's leading telecom, Unitel, highlights the increasing cybersecurity threats faced by telecom providers, especially during critical moments like IPOs. Such breaches can disrupt services, undermine investor confidence, and threaten customer trust, emphasizing the need for robust security measures in the industry. As African telecoms become more targeted, this incident underscores the importance of cybersecurity resilience for global and regional operators alike.

Key Takeaways

Angola's top mobile telecommunication provider, Unitel, continued to recover this week from a cyberattack that hit the operator on July 28, the same day the government closed a public offering for 15% of the carrier.

The purported attack caused widespread outages across the telecom's networks — the mobile operator restored 2G and 3G service on July 30 and SMS service on July 31, but its 4G and 5G — as well as some digital services — reportedly continue to have problems. In a statement in Portuguese posted to Facebook on Aug. 1, Unitel called the incident a "deliberate and malicious cyberattack on its technological infrastructure."

"Unitel will keep the market and investors informed of any relevant developments, in compliance with the legal rules to which it is bound as a publicly traded company, and remains engaged in the complete normalization of its services over the coming days," the company said in its statement.

Related:AI Agent Drives Espionage Attack on Thai Ministry of Finance

Unitel is the latest telecommunications provider in Africa to be hit with a disruptive cyberattack. In April 2025, mobile operator MTN Group, which operates in nearly a score of markets across Africa and the Middle East, suffered a breach that potentially exposed the data of its more than 200 million customers. In late 2024, cyberattackers successfully compromised Telecom Namibia, leaking customer information online in an apparent ransom scheme.

Unitel's Really Good, Really Bad Day

The cyberattack against Unitel kicked off at 2:20 am on July 28, the same day that the company began trading on the Angola BODIVA stock exchange. The Angola government had auctioned off 7.5 million shares of the company for a 15% stake, taking in more than 300 billion kwanzas, or about $320 million. Unitel's stock shot up almost 25% that day, but declined nearly 13% the next.

The danger for the mobile operator is that the disruption of services will send customers to seek out other mobile providers, even though Unitel commands a hefty majority of the market, with estimates of its share varying between 66% and 76%. While the majority state-owned operator has little competition, consumers and business in Africa rely on mobile networking for digital services, making the restoration of services a priority.

On Aug. 4, for example, business people in the capital of Luanda had to turn to cash because some popular financial services, such as Multicaixa Express, no longer worked, according to a Ver Angola news report. In 2025, Multicaixa Express accounts for 62% of financial transactions over networks, the report stated.

Related:Brazilian Banking Trojan Actively Spreading in Portugal

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