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Belgium's Tax Portal Offline After Cyberattack Ahead of Deadline

Belgium's Tax Portal Offline After Cyberattack Ahead of Deadline

First seen 30 Oct 2026, 01:14 UTC • •
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ThreatCluster AI
ThreatCluster •October 30, 2026 at 02:14 UTC
  • •MyMinfin portal taken offline due to cyberattack detected on October 27-28, 2026.
  • •No evidence of data breaches or personal information theft reported.
  • •Tax filing deadline extended for affected taxpayers amid ongoing investigations.

Belgium's Federal Public Service Finance has taken its MyMinfin online tax portal offline due to a cyberattack detected overnight on October 27-28, 2026. The attack prompted the suspension of access to MyMinfin and other digital services as a precautionary measure. Authorities confirmed that there is currently no evidence of data breaches or theft of personal information. The shutdown affects millions of users, including citizens and businesses, just days before the October 31 tax filing deadline. Affected taxpayers will receive extensions for their filings, with new deadlines to be announced. Investigations into the attack are ongoing, and the ministry is working to secure its systems. The incident follows a previous security alert earlier in October regarding vulnerabilities in PHP, although no connection has been established between the two events.

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Timeline

2026-10-27
Cyberattack detected on finance ministry systems
The Federal Public Service Finance identified unauthorized access attempts overnight, prompting immediate action to secure systems.
Brusselsmorning
2026-10-28
MyMinfin portal and services taken offline
Access to MyMinfin and other digital services was suspended as a precaution while investigations were initiated.
Therecord.Media
2026-10-29
Tax deadline extension announced
The Belgian government confirmed that taxpayers will receive extensions for their filings due to the cyberattack.
Brusselsmorning

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Common questions

What services are affected by the cyberattack?
The MyMinfin portal and several other digital services managed by the Federal Public Service Finance are currently offline.
Is there a risk of data breach?
As of now, authorities have reported no indications of data breaches or personal data theft.
What should taxpayers do regarding their filings?
Taxpayers should await further announcements regarding new deadlines for their tax filings.