Dutch Finance Ministry takes treasury banking portal offline after breach

The Dutch Ministry of Finance detected a security breach (March 19) and on March 23 temporarily took multiple systems offline — notably the digital treasury banking portal — disrupting online balance views and portal functions for roughly 1,600 public institutions. Investigations are ongoing with the NCSC and external forensics; no threat actor has claimed responsibility and there is no confirmed data exfiltration, while funds and payment processing remain operational.