Hospitals and healthcare establishments are facing increasingly critical cyberattacks. Find out why this sector is vulnerable and how to build digital resilience.
The healthcare sector is today among the preferred targets of cybercriminals, due to the increasing digitalization of medical infrastructures and the extreme sensitivity of the data processed. When an incident occurs, its consequences go far beyond the technical framework, potentially disrupting care, delaying treatment and even endangering patients. This vulnerability is explained as much by the value of the information held (medical records, administrative data or even identifiers) as by the operational context under high pressure, where the slightest interruption becomes critical and can push establishments to react urgently, or even to give in more easily in the face of an attack.
The health sector remains one of the most exposed to cyberattacks in France. According to the ANSSI 2025 panorama, published in 2026, 1,366 security incidents were handled at the national level, a stable but still high volume. In this context, health represents around 10% of incidents, making it the third most targeted sector behind education and public administration.
At the same time, French healthcare establishments reported 749 security incidents in 2024, an increase of almost 30% in one year, illustrating both the intensification of attacks and a better detection and reporting capacity.
This constant pressure is part of a lasting trend: attacks are becoming more frequent, more sophisticated, and directly affect the continuity of care, in a context where dependence on digital systems continues to grow.
The human factor also plays a determining role. In environments where the pace is high and priorities vital, vigilance in the face of digital threats is not always optimal. A simple mistake, such as clicking on a fraudulent link, can be enough to compromise an entire system. Added to this is the frequent presence of obsolete medical systems or equipment, which are difficult to accommodate with regular updates, and which constitute entry points for cyberattacks.
The threats facing the sector are multiple and constantly evolving. Phishing remains one of the most widespread vectors, relying on deceptive emails aimed at harvesting credentials or introducing malware. Ransomware, on the other hand, cripples systems by encrypting data, with the aim of demanding a ransom in exchange for its return. Social engineering, more insidious, exploits the trust and psychology of individuals to obtain sensitive access. Finally, distributed denial of service (DDoS) attacks can make entire services unavailable by saturating infrastructure.
The consequences of these attacks are no longer theoretical. Many recent incidents have shown their direct impact on patient care: appointment postponements, unavailability of critical services, or even exposure of confidential data. In many cases, these situations could have been mitigated or even avoided thanks to appropriate security measures and better team awareness.
Faced with the intensification of cyber threats, the response can no longer be solely technical or one-off: it must be structured, continuous and integrated at all levels of the organization.
The priority is to reduce the attack surface, by strengthening access controls, the principle of least privilege and the generalization of multi-factor authentication. These measures limit the impact of compromised credentials, one of the main attack vectors.
Operational resilience is essential. Establishments must regularly test their detection and response capabilities via simulation exercises (ransomware, phishing, account compromise), in order to identify vulnerabilities and improve crisis coordination.
The management of systems and infrastructure remains critical: updating software and connected medical equipment, and, of course, monitoring the proper implementation of measures such as network segmentation or access restrictions.
Data protection must be systematic: encryption, security of exchanges and control of access to medical records. Combined with isolated and tested backups, these measures greatly reduce the impact of attacks, particularly ransomware.
Finally, cybersecurity must become a collective reflex, based on awareness of phishing and social engineering, and on clear reporting processes. A shared security culture improves detection and accelerates recovery.
The challenge is no longer just to prevent attacks, but to respond to them quickly, limit their impact and guarantee continuity of care in environments where every minute counts.
In a sector where every minute counts, cybersecurity can no longer be considered a secondary constraint. It constitutes an essential pillar to guarantee continuity of care, protect patients and meet regulatory requirements. Better understanding threats and adopting appropriate practices not only reduces risks, but also sustainably strengthens the resilience of healthcare establishments in the face of cyber threats.
