ISS Global / Investigation Report
PHP-beveiligingswaarschuwing: grootschalige tijdelijke sluiting van websites
Preventieve opschorting van diensten gemeld op 21 oktober 2026
- Issued
- Location
- Netherlands and international organisations using PHP-based services
- Incident date
- 21 October 2026; preceding warning on 20 October
- Language
- Dutch
- Document
- Dutch edition · 11 pages · PDF · 0.6 MB
Dutch-language investigation of precautionary website shutdowns following critical PHP security warnings. It distinguishes service unavailability, exposure to a vulnerability and confirmed compromise, without treating every offline website as evidence of a cyberattack.
Original report cover · Open PDF ↗Scope & reporting context
Reporting window: 21 October 2026, 00:00–23:59 Europe/London; the 20 October warning provides context and sources were consulted on 22 October. Covers reconstruction, technical cause, warning and patch chronology, documented service impacts, attribution limits and recovery verification, with ten linked primary sources. No internal system logs or forensic exhibits were examined. Includes a translation-accountability sheet checked against the English edition; only the supplied Dutch PDF is added here.
The complete PDF contains the report’s source register, assessments and limitations. Read those alongside any individual finding.