Belgian hospital AZ Monica (campuses in Antwerp and Deurne) shut down all servers after a cyberattack discovered around 06:30 local time, forcing the organization to cancel scheduled care and operate emergency services at reduced capacity. With staff unable to access electronic patient records, the hospital postponed non-urgent consultations and procedures, shifted to paper-based registration, and transferred seven critical-care patients to other hospitals as a precaution; reporting also indicates ~70 planned operations were cancelled and ~70 patients were sent home.
Authorities were notified and a criminal investigation is underway, with the public prosecutor involved and Belgium’s federal police cybercrime unit reported on site. Public reporting has not yet confirmed whether systems were encrypted or whether any ransom/extortion demand was made. Separately, Central Maine Healthcare in the U.S. reported a prior-year breach affecting 145,381 individuals after attackers maintained access for over two months, but that incident is unrelated to the AZ Monica disruption.

See the actors and campaigns active against you right now.
5 events from the most recent confirmed update back to the earliest known activity.
By January 14, 2026, reporting indicated the incident was being described as ransomware-related and that the disruption extended beyond surgeries to examinations and treatments such as radiology, medical imaging, and chemotherapy. Hospital leadership said the server shutdown was intended to help protect patient data during the attack.
By the hospital's Tuesday update on January 13, 2026, AZ Monica said ambulances were not transporting patients to its facilities and urged people to seek urgent care through general practitioners or other emergency departments. The diversion increased pressure on nearby hospitals while AZ Monica's emergency department remained only partially operational.
After the attack was discovered, AZ Monica notified police and prosecutors, and the Antwerp public prosecutor opened an investigation. The federal police cybercrime unit responded on site to examine the incident.
The January 13 outage forced AZ Monica to postpone non-urgent consultations, cancel about 70 planned operations, and continue registration and care through slower manual processes. Emergency services operated at reduced capacity, MUG and PIT services were temporarily unavailable, and seven critical-care patients were transferred to other hospitals with Red Cross assistance.
On January 13, 2026, staff at AZ Monica hospital detected a serious IT disruption around 6:30 a.m. affecting its Antwerp and Deurne campuses. The hospital proactively disconnected all servers as a safety measure, cutting off access to electronic systems and medical records.
Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.
See the adversaries and campaigns active against your sector right now, ranked by what they're exploiting.
6 references tracked. Mallory keeps watching after this page renders.
scworld.com
Open sourcetherecord.media
Open sourcego.theregister.com
Open sourcebleepingcomputer.com
Open sourcedatabreaches.net
Open sourcesecurityaffairs.com
Open sourceMap indicators from this story to your assets and identify affected systems in minutes.
Every observed campaign, victim, and pivot linked to actors named in this story.
Malware, exploits, and IOCs connected to the activity described here.
YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.
Get matching new stories delivered to your team as they break — not the next morning.
Ask questions about this story and take action on the answers.