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# Belgium's tax agency confirms cyberattack, pulls services offline

**[The Register](https://daily.dev/sources/theregister)** · 3 min read · 0 upvotes · 0 comments

## Summary

Belgium's tax agency, FOD Financiën, took several digital services offline after a cyberattack this week. MyMinfin, Tax-on-web and Biztax went offline after potentially infected elements were isolated. The agency says the attack was thwarted within hours and it was unable to gain access to applications or data, and there are no indications of a data breach. The October 31 tax filing deadline for certain income types has been extended to November 16 while services are restored in an isolated environment.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.theregister.com/security/2026/10/29/belgiums-tax-agency-confirms-cyberattack-pulls-services-offline/5306409>

## Questions this post answers

### Why did Belgium's tax portal MyMinfin go offline?

Belgium's tax agency, FOD Financiën, took MyMinfin, Tax-on-web, and Biztax offline after detecting a cyberattack. Officials say the attack was thwarted within hours and could not expand enough to take over applications or access data. Services were isolated as a precaution while a restoration happens in an isolated environment, which requires considerable time and caution.

_Teams tracking government security incidents can follow cyberattack fallout like this on daily.dev._

### Was any taxpayer data stolen in the Belgian tax agency cyberattack?

No indications of a data breach have emerged. FOD Financiën stated there are no signs that data was compromised or accessed, and spokesperson Francis Adyns confirmed the attack was unable to gain access to applications or data before it was stopped. The investigation into this aspect is ongoing.

_Anyone assessing breach risk after an incident can track verified updates like this on daily.dev._

### When is the extended deadline for Belgian tax filings after the FOD Financiën cyberattack?

The deadline for specific income types, such as sole traders and foreign company earnings, originally due October 31, has been extended to November 16. By then, the MyMinfin platform used for these filings is expected to be back up and running.

_Developers and businesses tracking deadline changes from an outage can follow the story on daily.dev._

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---

Tags: [#security](https://daily.dev/tags/security), [#cyber](https://daily.dev/tags/cyber)

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