Belgium Launches Investigation into China-Linked Cyberattack on Intelligence Agency

Belgium Launches Investigation into China-Linked Cyberattack on Intelligence Agency

Belgium is currently facing a significant cybersecurity incident involving an alleged data breach of its state security service, known as the VSSE. This incident highlights the ongoing threat posed by cybercriminals, particularly state-sponsored hackers, and underscores the importance of robust cybersecurity measures.

Details of the Alleged Data Breach

The Belgian federal prosecutor’s office confirmed that an investigation into a cyberattack was initiated in November 2023 after reports of the breach came to light. The TechCrunch report indicates that this situation follows an earlier article by Le Soir, a French-language Belgian newspaper.

Involvement of Chinese Hackers

According to reports, a Chinese hacking group gained unauthorized access to the VSSE’s external mail server from 2021 to 2023. The hackers exploited a vulnerability in software developed by the U.S. cybersecurity firm Barracuda.

The Vulnerability

The critical flaw, first disclosed in May 2023, impacts Barracuda’s Email Security Gateway (ESG), which serves as a firewall for filtering potentially malicious content in emails. Key points about this vulnerability include:

  • Allowed hackers to exfiltrate sensitive data.
  • Reportedly targeted government agencies, making up nearly a third of affected organizations.
  • Identified as a zero-day exploit by cybersecurity experts at Mandiant.

In response to the situation, Barracuda urged its customers to replace affected ESG appliances and rotate any compromised credentials. The company also recommended checking for signs of compromise dating back to October 2022.

Impact on Belgium’s State Security Service

As reported by Le Soir, the Chinese-backed hackers were able to exfiltrate approximately 10% of the VSSE’s incoming and outgoing emails. While classified information remained secure, personal data of nearly half of the agency’s employees was compromised. This data included:

  • Identity documents
  • Resumes
  • Internal communications
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Response from VSSE

Following the breach, it was reported that the VSSE ceased using Barracuda’s products. The incident first came to public attention in July 2023, raising concerns about the security measures in place to protect sensitive information.

For more information on cybersecurity and data protection, you can visit the Cybersecurity and Infrastructure Security Agency (CISA) website, which offers resources and guidelines on safeguarding against cyber threats.

This incident serves as a reminder of the critical need for organizations, especially government agencies, to continually assess and strengthen their cybersecurity posture in the face of evolving threats.

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