katholiekamersfoort.nl
About the organisation
The church website's network (katholiekamersfoort.nl/) has been breached, resulting in the exfiltration of over 10 GB of data. This data pertains to donors, staff, and the personal information of a large number of individuals. The compromised data includes: Databases and Personally Identifiable Information (PII), internal network shares and document, contact lists, board and committee data, as well as system metadata.
What the listing means
katholiekamersfoort.nl appeared on the stormous leak site on 02 June 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has published 7 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing katholiekamersfoort.nl as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on katholiekamersfoort.nl, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Education organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/a2F0aG9saWVrYW1lcnNmb29ydC5ubEBzdG9ybW91cw==