Cybersecurity & Healthcare
This page provides a comprehensive overview of the complex intersection of cybersecurity and healthcare
– why it matters, what threats you need to watch for, and how 365 Total Protection can help you stay ahead of them.
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On this page we’ll guide you through:
- The Importance of Cybersecurity in Healthcare: Understanding why digital security is integral to reliable care
- Recent Breaches in the Healthcare Sector: Find out, how they occured and what you can learn from them.
- Top Cybersecurity Threats in Healthcare: A breakdown of the most common and damaging attack types targeting healthcare organizations
- Best Practices to Prevent Data Breaches: Actionable steps to improve cybersecurity and reduce risks
- How to Defend against these Cyber Threats: How our technologies can help you detect, respond to, and recover from cyber threats with minimal disruption to care delivery
Why is the Healthcare Sector a Top Target for Cybersecurity Threats?
There are several reasons why the healthcare sector is particularly attractive to cybercriminals. The most common include:
Urgency of Patient Care
Healthcare services are inherently time-sensitive. Any disruption – whether to hospital IT systems, medical devices, or communication networks – can have immediate and potentially life-threatening consequences. This critical need for uninterrupted care often increases the likelihood that healthcare providers will pay ransoms to restore operations quickly.
The Human Factor
Healthcare services rely heavily on human interaction among doctors, nurses and administrative staff, who have varying levels of security awareness. Therefore, cyber criminals anticipate high chances for phishing attacks, social engineering and accidental data leaks.
Outdated IT Infrastructure
Many healthcare facilities still operate with outdated systems, hardware and software that lack modern security features. These outdated systems are often difficult to patch and maintain, creating security gaps that attackers can exploit.
High Value of Personal Data
Healthcare organizations store vast amounts of sensitive information, including patient records, insurance data, medical histories and payment details. This type of data is highly valuable on the black market and can be exploited for identity theft, insurance fraud or extortion.
The Importance of cybersecurity in healthcare
Unlike in many other industries, downtime in healthcare doesn’t just mean lost productivity and financial losses – it can directly impact patients’ health, making cybersecurity a critical component of quality care.
In 2024, healthcare once again ranked as the industry with the highest breach recovery costs – for the 14th year in a row. This highlights the key role of effective cybersecurity solutions in the sector.
As cyberattacks grow in frequency and sophistication, hospitals, clinics, and healthcare providers must recognize cybersecurity as a fundamental pillar of patient safety and trust. In today’s digital healthcare environment, everything from diagnostics and treatment to patient records and billings depends on secure and reliable IT systems.
A single breach can have far-reaching consequences, not only compromising sensitive patient data, but also disrupting clinical operations, delaying treatments, and, in severe cases, endangering lives.
The Consequences of Stolen Healthcare Data on the Dark Web
Cyberattacks in the healthcare sector often result in the theft of highly sensitive information, including personal details, login credentials, corporate data, and medical records. Once stolen, this data frequently resurfaces on the dark web, where it becomes a valuable commodity for cybercriminals.
Cybercriminals exploit leaked data in numerous ways: through credential stuffing, they test stolen usernames and passwords across multiple platforms to gain unauthorized access to systems; through account takeovers, they infiltrate corporate environments, potentially accessing internal tools, emails, and patient databases; and through email-based crimes like phishing, extortion, spamming, and social engineering, they further compromise trust and security within healthcare organizations.
Recent Cyberattacks on the Health Sector
AMEOS Group, Germany (2025)
In July 2025, the AMEOS healthcare network, operating over 100 clinic and hospital sites across Germany, Austria and Switzerland, suffered a cyberattack that forced a shutdown of systems at all sites due to its centralized IT structure. Attackers reportedly gained access to specific folders and data, raising fears that encrypted medical records, including diagnoses, test results, and imaging, could become inaccessible to doctors and patients.
However, AMEOS stressed that “no global data loss” occurred, and that backups remained unaffected. While the full extent of potential data theft is under investigation, the incident disrupted clinical operations and highlighted the systemic risks of centralized digital infrastructure in healthcare.
Change Healthcare, USA (2024)
In what became the largest healthcare data breach in history, the BlackCat ransomware group infiltrated Change Healthcare’s systems – America’s leading medical claims clearinghouse, owned by UnitedHealth Group – by exploiting a Citrix server that lacked multifactor authentication. The attackers exfiltrated sensitive data from approximately 190 million individuals, including insurance details, diagnoses, lab tests, billing info, and Social Security numbers.
A $22 million ransom was reportedly paid to prevent the release of the data; however, the BlackCat ransomware group performed an exit scam, keeping the ransom and not paying the affiliate who conducted the attack. The breach resulted in widespread service disruptions, a wave of lawsuits and a HIPAA investigation, leading to estimated response costs over $2 billion and likely contributing to numerous deaths in the USA.
National Health Service (NHS), UK (2024)
In June 2024, a ransomware attack by the Qilin gang hit Synnovis, a pathology provider for two NHS trusts in London, disrupting diagnostic services and causing over 6,000 appointment postponements. Emergency patients were rerouted, and a national blood donation appeal was issued. Synnovis refused to pay a £40 million ransom, leading attackers to leak 400 GB of sensitive patient data on the dark web. Experts have since stated that the cyberattack was completely preventable.
Check out our blog post for a closer look at how the EU is responding to increasing cyber threats in the healthcare sector. It explores the key measures outlined in the EU’s action plan to strengthen digital defenses, improve incident response, and support healthcare organizations in building long-term cyber resilience.
Top Cybersecurity Threats in Healthcare
As healthcare systems become more digitally integrated, they face a shifting threat landscape where attackers exploit both technical and human vulnerabilities. Rather than relying on broad, opportunistic attacks, today’s cybercriminals use highly targeted methods to exploit the unique vulnerabilities of medical institutions. These are four major cybersecurity threats to be aware of:
Ransomware
Ransomware is a type of malicious software that encrypts files or entire systems, locking users out of their data until a ransom is paid. Unlike other malware, ransomware directly confronts the victim with a demand, often displaying a message from the attacker. If the infected device is part of a network, such as in a hospital or company, the ransomware can spread rapidly and disrupt entire operations. Beyond the ransom itself, the real costs often come from downtime, data loss, reputational damage, and legal consequences.
DDoS Attacks
DDoS attacks occur when a website or online service is overwhelmed with a flood of malicious traffic, making it slow or completely inaccessible. Unlike legitimate surges in user activity, which can be resolved by scaling up server resources, DDoS attacks are intentional and coordinated, often using networks of compromised devices (botnets) to send massive volumes of fake requests. The goal is to disrupt operations, damage reputation, or create a diversion for more targeted intrusions.
Phishing
Phishing attacks are among the most common cyber threats faced daily, typically delivered through email. However, they can also arrive via SMS (smishing), phone calls (vishing), fake websites or more targeted methods like spear phishing. These deceptive messages often urge recipients to take immediate action, such as verifying a LinkedIn account, changing banking credentials or clicking on a malicious link.
Social Engineering
Social engineering is a manipulation tactic where attackers trick individuals into revealing sensitive information or taking unsafe actions, often by pretending to be someone they trust, like IT support or a colleague. Instead of exploiting technical flaws, it targets human behavior, making it one of the most effective forms of cyberattack. Human error causes around 95% of cybersecurity breaches, and social engineering is a major contributor.
10 Best Practices to Prevent Data Breaches in Healthcare
- Conduct Regular Risk Assessments: Identify vulnerabilities and potential threats to systems, devices, and workflows to proactively address security gaps by testing your security systems regularly.
- Train Employees Continuously: Regularly train staffs security awareness to help them recognize phishing and social engineering attacks, and to ensure they handle sensitive patient information securely.
- Apply Principle of Least Privilege: Limit user access based on roles.
- Use Additional Access Controls: Use multi-factor authentication to prevent unauthorized entry even if credentials are compromised.
- Implement Multi-layered Defenses: Use a combination of firewalls, antivirus, intrusion detection, and other tools to build overlapping layers of protection.
- Keep Systems and Devices Updated: Regularly patch and update software, applications, and medical devices to protect against known vulnerabilities exploited by attackers.
- Encrypt and Protect Sensitive Data: Protect patient and organizational data both in transit and at rest using strong encryption to prevent unauthorized reading or misuse.
- Back Up Data and Systems Frequently (combines “Backup Systems” + “Backup Data Regularly”): Ensure that critical data and services are regularly backed up and can be restored quickly in case of a ransomware attack or system failure. Use the 3-2-1-1 Backup Rule to do so.
- Develop an Incident Response Plan: Establish a clear response strategy to security incidents to minimize damage and recovery time and to ensure your team can act quickly and effectively when incidents occur.
- Ensure Compliance with Regulations: Follow data protection laws and industry standards like HIPAA (US-law) or GDPR (EU) to maintain legal, ethical, and operational safeguards for patient information.
How the Health sector can defend itself against these threats
While best practices are a solid foundation for cybersecurity, effective protection in complex environments like healthcare requires more than guidelines. It demands robust, adaptable solutions.
365 Total Protection, our comprehensive cloud security solution for Microsoft 365, covers all aspects of data protection, security, compliance, cybersecurity awareness, and backup. Below, we outline key technologies and services included in this package that enable healthcare institutions to turn best practices into concrete, operational defenses.
In the healthcare sector, where human error is a leading cause of data breaches, strengthening the “human firewall” is critical. Hornetsecurity’s Security Awareness Service equips healthcare staff with the knowledge to identify and respond to phishing, ransomware, and social engineering threats.
Like a real attacker, our AI-powered Spear Phishing Engine creates sophisticated simulations, preparing your employees for possible attacks. Observing your employees’ behavior towards these simulations, they receive as much training as necessary and as little as possible.
Progress is measured via a comprehensive Awareness Dashboard, enabling healthcare organizations to track risk reduction and training effectiveness.
Every email inbox is a potential doorway for cyber threats, and in healthcare, that doorway leads directly to systems that store sensitive patient data, lab results, and critical care information.
Our Spam & Malware Protection blocks malicious content before it reaches healthcare staff. With self-improving filters, advanced rule creation, and a multi-layered spam and virus detection defense, this solution ensures that clinical communication remains safe, uninterrupted, and compliant.
Cybercriminal tactics are evolving rapidly, and traditional security tools often struggle to detect and stop new forms of attack. With the rise of widely available AI-powered tools, attackers can now generate convincing phishing emails, bypass security measures, and deploy complex malware.
Advanced Threat Protection offers effective defense against these advanced threats, including zero-day exploits, ransomware, CEO fraud, and spear phishing. By using intelligent analysis and detection techniques, the solution identifies and blocks even previously unknown attack patterns. This ensures a higher level of IT security, which is particularly important in sensitive environments like healthcare.
Controlling access to sensitive data is vital to protect patient privacy and maintain regulatory compliance. Misconfigured or overly broad user permissions can lead to unauthorized access, data breaches, and audit failures.
365 Permission Manager helps healthcare organizations enforce the principle of least privilege by ensuring that employees only access Office 365, Teams, OneDrive and SharePoint data they need for their roles. The user-friendly dashboard provides an overview of the compliance status of SharePoint sites and shows you critical sharing permissions immediately.
From ransomware attacks to accidental deletions or system failures, healthcare providers face constant risks that threaten the availability and integrity of critical medical data. A robust backup solution ensures that patient records, diagnostics, and operational systems can be quickly restored, minimizing downtime and safeguarding continuity of care. Additionally, reliable backups support compliance with healthcare data protection laws such as HIPAA and GDPR, reinforcing both security and trust.
With 365 Total Backup you benefit from automated and effortless backup, management, and restorage of all your Microsoft 365 data. As backups are stored and secured on Hornetsecurity infrastructure in a region of your choice, independent of Microsoft, they are protected from ransomware attacks and third-party disruptions.
Wrapping it up
As healthcare continues to digitize, cybersecurity is no longer optional. It is essential to patient safety, operational continuity, and regulatory compliance. From understanding the evolving threat landscape to implementing best practices and proven solutions, proactive security measures are key to protecting sensitive data, critical systems and patients’ lives.
Our solutions are designed to support healthcare organizations in preventing, detecting, and responding to cyber threats efficiently and effectively. With the right tools and awareness in place, you can strengthen your defenses and ensure secure, uninterrupted care.