DisclosureLens
GLOBALMalwareGovernmentGovernmentRansomwareRhysidaRansom DemandedActor NamedData Leak ThreatenedData PublishedHigh

Machelen (Belgium)

bd_f3c224b1ab1308b7 · schema v1 · pii pii-v2

Severity

High

Discovered

—

Filed

Oct 27, 2026

To disclose

—

Affected

Not disclosed

Confidence

50%
Full breach record for Machelen (Belgium) →

Threat-actor claim — not a regulatory filing

This row is a claim by the ransomware group Rhysida on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.

Group activity: Not FoundDiscovered: 2026-10-27
View aggregator listing on ransomware.live

Source: Ransomware.live

Post text · scraped from the leak site

Machelen (Belgium) Machelen (Belgium) - municipal and social welfare (OCMW) file servers1.3 million files, ~2.9 TB. Working copy + backup copy (lawer2/lawer3). Language: Dutch, partly French.Contents:Social welfare and migration service client files: passports, ID cards, residence permits, sick notes.WZC nursing home: medical files, staff HR dossiers, workplace accidents.Civil status records (births, marriages) with national register numbers (NISS/RRN).Payslips, financial data.Correspondence (~23k messages), employee home folders.Databases and backups: full OCMW database backup (6 GB, 09/2026), 645 .mdb databases, 12,873 .dbf, 110 .bak (17 GB).Verified: 13,319 files with personal data. Among them - a valid Belgian ID card (expiry 02/2029), Belgian and Moroccan passports, national register numbers (RRN), sick notes with patient addresses, medical documents (GDPR Art. 9 special categories). More

Incident timeline — mostly unverified

? — ?

Breach window unknown

Oct 27, 2026

Claim posted

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Claim → filing

—

Compliance clock

Not assessable

Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident

Evidence ladder

Leak-site claimThis record

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.

Source ceiling

  • actor name
  • victim claim
  • ransom/leak status
  • discovery date
  • materiality
  • notification
  • affected count
  • confirmed data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2023-06-05

rhysida

According to ransomware.live, Rhysida is a ransomware-as-a-service (RAAS) group that emerged in May 2023. The group utilizes a namesake ransomware through phishing attacks and Cobalt Strike to breach the targets' networks and deploy their payloads. The group threatens to publicly distribute exfiltrated data if the ransom is not paid, and it's worth mentioning that Rhysida is still in the early stages of development. The ransomware leaves PDF notes in the affected folders, instructing victims to contact the group through its portal, and payment is made via Bitcoin. After encryption, the ransomware appends the extension '.ryshida' to encrypted files. Source: https://github.com/crocodyli/ThreatActors-TTPs

357 tracked hereFull profile →