Belgian State Security hit by data breach, employee data potentially exposed
Between May 2025 and Spring 2026, the Belgian State Security was the victim of a cyberattack in which employee data may have been stolen.
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Belgium's State Security service was reportedly breached through vulnerabilities in Ivanti Endpoint Manager Mobile software.
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Attackers may have accessed employee names, phone numbers, email addresses, device identifiers and GPS location data.
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The agency's internal intelligence network was not compromised, according to reports.
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The attack is the latest in a series of cyber incidents linked to critical flaws in Ivanti products that have affected governments and major institutions across Europe.
According to the Belgian news outlet RTBF, the attackers managed to breach Ivanti Endpoint Manager Mobile (EPMM), a security software suite used to control access rights to mobile devices, apps, and content.
The news outlet spoke with anonymous sources familiar with the matter. They claim that hackers exploited flaws in Ivanti’s security software to access sensitive and personal information of employees of the Belgian intelligence service.
Reportedly, the attackers exfiltrated data such as first and last names, phone numbers, email addresses, phone IDs, and GPS locations. However, the hackers never reached the intelligence agency's internal network, where confidential information is stored and exchanged.
As of writing, no ransomware extortion group has claimed responsibility for the attack on the Belgian State Security, although some news outlets have attributed the breach to UNC5221, a China-based, state-sponsored hacking group.
In January 2026, Ivanti released security updates for 2 vulnerabilities. These exploits allowed unauthenticated users to execute remote code (RCE) on unpatched servers, providing persistent access and enabling attackers to steal data or gain control of the system. On a scale of 1 to 10, both vulnerabilities were rated 9.8.
National cybersecurity agencies from multiple European Member States, including Belgium and the Netherlands, warned businesses and organizations working with Ivanti EPMM that they should assume their servers had been compromised and recommended that they immediately install the patches released by Ivanti.
The vulnerabilities in Ivanti’s security software also affected organizations, including the European Commission and the Dutch data protection authority (DPA).
This isn’t the first time that Belgium’s State Security has been targeted by hackers. Between February 2021 and May 2023, members of the Chinese hacking group gained access to a portion of the intelligence service’s external email server due to a vulnerability in Barracuda’s security software.
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