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type: incident · created: 2026-10-30 · updated: 2026-10-30 · tags: [incident, government] · confidence: medium · severity: critical · affected_sectors: [government] · au_impact: true

Belgium's Federal Public Service Finance (FPS Finance) took MyMinfin — the country's main online platform for tax and financial administration — offline after a cyberattack, ahead of a 31 October deadline for taxpayers declaring certain income types. The agency said on Wednesday it was investigating the extent of the attack and found "no indication that a data breach has occurred or that any data has been stolen", though it did not rule out data exposure and continues to examine the possibility. Affected taxpayers will receive a revised, extended filing deadline. Belgian authorities have not attributed the attack or disclosed how access may have been gained. The shutdown shows public-sector cyber incidents hitting their optimum moment for disruption — timed against a statutory deadline and forcing operational concessions at the peak of a filing window.

Attribute Detail
Sector Government
Date 2026-10-30
Source The Record
Reliability Tier 2