The security of health data has become a major issue in the medical field. With the rise in cyberattacks, internal risks and strict regulations, healthcare companies absolutely must strengthen the protection of their sensitive information. This article explores the main threats, the regulatory frameworks and the best practices for securing health data.
Why health data security is crucial
Health data: a critical security issue
Health data, which includes patients’ medical records, test results, and information on treatments and diagnoses, is particularly sensitive. This information is of inestimable value to cybercriminals, who can use it for malicious purposes such as identity theft or digital blackmail.
This data does not concern the patient alone, but also the healthcare system as a whole, including hospitals, clinics, healthcare professionals and e-health platforms. Health information sits at the crossroads of privacy and public health, which calls for strict security measures to guarantee its confidentiality.
The consequences of a health data breach
A breach of health data can have serious repercussions:
- Impact on reputation: a healthcare institution that loses the trust of its patients because of a data leak suffers damage to its image that is difficult to reverse.
- Financial and legal penalties: in the event of non-compliance with laws and regulations such as the GDPR, fines can reach millions of euros.
- Loss of patient trust: the confidentiality of medical information is a fundamental right. Breaching it leads to a loss of trust in healthcare professionals and institutions.
The main threats to health data
Cyberattacks and ransomware
Cyberattacks, in particular ransomware, represent a major threat to healthcare systems. Cybercriminals target digital infrastructures in order to block access to data until a ransom has been paid. In 2020, many hospitals and healthcare institutions were victims of this type of attack, which seriously disrupted the care of patients.
Cyberattacks often exploit security flaws in systems, weak passwords or even outdated software. That is why it is crucial to adopt robust cybersecurity measures, such as data encryption, multi-factor authentication and continuous monitoring of systems.
Internal risks and human error
Human error is another frequent cause of data breaches. Whether it is an email sent to the wrong person, unauthorised access or a poor system configuration, internal errors can cause unintentional data leaks. Raising employees’ awareness of data security and training them are therefore essential.
Connected medical devices (IoT): an underestimated attack surface
Beyond traditional information systems, connected medical equipment widens the attack surface: MRI machines, surveillance cameras, infusion pumps, pacemakers. In 2018, Medtronic confirmed a vulnerability in its MiniMed insulin pump: an attacker could have remotely altered the dose injected into a patient. The scenario never materialised, but it illustrates a risk specific to healthcare: one where a cyber flaw directly threatens the physical safety of patients.
Two cyberattacks that marked the healthcare sector
For French hospitals, ransomware is anything but theoretical:
- CHSF in Corbeil-Essonnes (August 2022): the data of the Centre Hospitalier Sud Francilien was encrypted and held hostage for a ransom of 10 million dollars (source: Numerama). The likely entry point: a simple phishing email.
- Versailles hospital (December 2022): the attack forced the activation of the “Plan Blanc” emergency protocol, the urgent transfer of at-risk patients and the postponement of operations. The facility was disrupted for several weeks.
Beyond the ransom, the real bill adds up the restart of IT systems, the extra staff, the forensic investigation of the attack, the lost activity and the damage to reputation.
The key regulations for health data security
The GDPR and the protection of health data in Europe
The GDPR (General Data Protection Regulation) imposes strict rules on the processing of personal data, including health data. Data controllers must:
- Ensure the security and confidentiality of health data.
- Base the processing of health data on an exception in Article 9: the patient’s explicit consent is one of them, but care and the management of health services generally fall under Article 9(2)(h).
- Inform the persons concerned in the event of a data breach.
- Implement adequate measures to minimise risks, such as encryption and anonymisation.
NIS 2 and its impact on health data security
The NIS 2 Directive (Network and Information Systems) imposes additional obligations on healthcare institutions to secure their information systems. It strengthens the resilience of critical infrastructure, requiring risk management measures, regular audits and better management of security incidents.
HIPAA regulation for health data in the United States
HIPAA (Health Insurance Portability and Accountability Act) governs the processing of health data in the United States. It imposes standards to protect medical information, including rules on the access, disclosure and security of personal health data.
Strategies for securing health data
Putting a data security plan in place
The first step in protecting health data is to put a structured security plan in place. This plan must be adapted to the specific features of the institution, whether it is a hospital, a clinic or a medical practice, and include measures suited to the risks identified.
- Risk assessment: each organisation must identify its specific vulnerabilities, such as outdated systems, unsecured access points or a lack of staff training. This assessment makes it possible to prioritise the actions to take to strengthen security.
- Data security policies: it is essential to define clear policies governing access to patient data, the use of mobile devices, the storage of medical information and password management. These policies must be updated regularly to take new threats and regulatory changes into account.
- Incident management: put incident management protocols in place to respond quickly in the event of a cyberattack or data breach. This includes incident response plans, regular simulations and communication with the competent authorities, such as the CNIL (the French data protection authority), in the event of a serious breach.
Risk management and security audits
Risk management is a continuous process that involves identifying, analysing and treating the risks linked to patients’ health data. It is recommended to use proven methods, such as risk analysis based on ISO 27005, to structure this process.
- Regular security audits: carry out periodic audits to assess the effectiveness of the security measures in place. Audits must include penetration tests, assessments of system configuration and checks of compliance with the regulations in force (GDPR, HIPAA, etc.).
- Follow-up of corrective actions: at the end of the audits, corrective actions must be implemented to remedy the weaknesses identified. Regular follow-up of corrective actions makes it possible to ensure that the measures taken are effective.
- Proactive vulnerability management: it is crucial to monitor emerging threats at all times and to update systems accordingly. This includes applying software patches, managing compromised credentials and improving security configurations.
Using compliance and security tools
Technology solutions play a central role in securing health data. Specialised tools make it possible to centralise the management of security and compliance, thereby reducing the risk of human error and optimising processes.
- SaaS cybersecurity management solutions: these platforms offer advanced features for steering security, in particular risk management, supervision of audits and collaboration between the various players involved in security. SaaS solutions, such as those designed specifically for the healthcare sector, include dashboards to track the state of security and compliance levels in real time.
- Automation of audits and compliance: compliance tools make it possible to automate a large share of the tasks linked to audits, thereby reducing the teams’ workload and minimising the risk of errors. These tools also make reporting easier, as well as the generation of compliance reports for the regulatory authorities.
- Encryption and data protection: encrypting data, both in transit and at rest, is an essential measure to protect sensitive information. Modern solutions include advanced encryption technologies, guaranteeing that only authorised persons can access patient data.
- Role-based access control: access management systems must be designed to authorise access to data only to authorised persons, according to their role and responsibilities. This limits the risk of unauthorised access and protects data against inappropriate use.
Working with cybersecurity experts
For healthcare institutions that do not have sufficient internal resources, it is often beneficial to call on external cybersecurity experts. These consultants can bring specialised skills to assess systems, propose improvements and support teams in implementing best practices.
- Support with regulatory compliance: experts can help to interpret complex regulations such as the GDPR, HIPAA and NIS 2, and to put in place security measures that meet the legal requirements.
- Simulations and penetration tests: penetration tests, carried out by external experts, make it possible to simulate real attacks and to test the resilience of the systems in place. This makes it possible to discover hidden vulnerabilities and to put corrections in place proactively.
- Continuous training of teams: working with cybersecurity professionals also makes it possible to train staff to detect threats, adopt good practices and react to incidents.
By combining advanced technologies, rigorous risk management and close collaboration with security experts, healthcare institutions can not only comply with regulations, but also build a genuine data security culture, which is essential to protect patients’ sensitive information.
Who should take part in health data security within an organisation?
The security of health data does not rest solely on the CISOs or the DPOs. It involves active collaboration from all of the players:
- CISO (Chief Information Security Officer): oversees the security policies, the management of incidents and the audits.
- DPO (Data Protection Officer): guarantees compliance with the regulations on the protection of personal data.
- Healthcare professionals: must be trained in good security practices in order to avoid human errors.
- Management: must support and finance the cybersecurity initiatives.
Good practices for protecting health data day to day
Raising awareness and training teams
The security of patients’ health data relies to a large extent on the vigilance of the people who handle it every day. Regularly raising the awareness of all employees and training them is a crucial step in limiting human error and strengthening the protection of information.
- Continuous training programmes: offer employees regular training to make them aware of cybersecurity risks and of the good practices to adopt. This training must cover subjects such as password management, recognising phishing emails and the procedures for reporting incidents.
- Attack simulations: organise practical exercises, such as phishing simulations, to test how teams react to cyber threats. These simulations make it possible to identify weaknesses and to adjust training accordingly.
- Awareness policies: put in place continuous awareness campaigns with regular reminders of good practices. This can include posters, internal newsletters or interactive workshops to keep security at the top of the list of priorities.
- Specialised training for healthcare professionals: adapt training programmes to the specific needs of doctors, nurses and other healthcare staff, who are often the first to interact with patients’ sensitive data. This training must help them understand the implications of the regulations (GDPR, HDS, the French health data hosting framework) and respect the rules of confidentiality.
Implementing technical security measures
Protecting health data requires the implementation of advanced technical measures to secure information systems and guarantee the confidentiality of data.
- Data encryption: encryption transforms sensitive data into a format that is unreadable for any unauthorised person. This measure applies both to data in transit (while it is transferred over a network) and to data at rest (stored on a server or in a cloud). Using encryption protocols such as AES-256 is a recommended practice to guarantee a high level of security.
- Role-based access control (RBAC): define strict access based on users’ roles, limiting access to health data to authorised persons only. For example, a doctor will only have access to the records of his or her own patients and not to all of the hospital’s data.
- Multi-factor authentication (MFA): strengthen logins with multi-factor authentication, which combines several identification factors (password, code sent by SMS, biometric recognition). This measure considerably reduces the risk of unauthorised access by adding an extra layer of security.
- System monitoring and intrusion detection: put in place monitoring systems that detect abnormal or suspicious behaviour within the IT network. Intrusion detection (IDS) and intrusion prevention (IPS) tools make it possible to quickly identify attempts at unauthorised access and to react before an incident occurs.
- Regular software updates and security patches: keeping systems up to date is essential to fix known vulnerabilities. Software updates, including those for operating systems, applications and network equipment, must be applied without delay to protect the infrastructure.
- Regular backups and restoration tests: make regular backups of health data and regularly test the ability to restore this data in the event of loss or corruption. Backups must be stored in secure and isolated environments so that they are not affected by attacks such as ransomware.
Putting access management policies in place
Controlling who accesses patients’ health data is fundamental to preventing abuse and limiting the exposure of sensitive information.
- Physical and logical access control: put in place physical access controls (badges, electronic locks) and logical access controls (personal credentials) to secure the environments where data is stored. Servers and equipment containing sensitive data must be installed in secure areas, accessible only to authorised staff.
- Regular review of access rights: regularly audit users’ access rights to make sure that only those who need it for their work can access health data. Former employees or external service providers must have their access revoked immediately at the end of their assignment.
- Network segmentation: segment the network into separate zones to isolate critical systems (such as patient databases) from the rest of the network. This limits the spread of cyberattacks and protects sensitive data.
Adopting password management practices
Password management is an aspect that is often neglected, but one that is essential for the security of health data.
- Strict password policies: put in place policies that require passwords that are complex, long and renewed regularly. Passwords must include special characters, capital letters and numbers in order to increase their strength.
- Password managers: use password managers in order to store and generate secure credentials. This avoids resorting to simple or reused passwords and makes it easier for users to manage their access.
- Avoiding password sharing: train users never to share their login credentials and to report immediately any suspicion that they have been compromised.
Implementing security policies for mobile devices
Mobile devices such as smartphones, tablets and laptops are potential vectors of data leaks if they are not properly secured.
- Encryption of mobile devices: activate encryption on all mobile devices used to access health data. This protects the data even if the device is lost or stolen.
- Mobile device management (MDM): use mobile device management solutions to control access to applications and data from mobile devices. These solutions make it possible to configure security policies, locate devices and wipe them remotely in the event of loss.
- BYOD (Bring Your Own Device) policies: govern the use of personal devices for professional purposes with clear policies that define the security rules to follow, such as installing antivirus software or the obligation to apply regular updates.
Communication and security incident management
The way an organisation reacts to a security incident is just as important as the prevention measures put in place.
- Incident response plan: establish an incident response plan that defines the steps to follow in the event of a cyberattack, a data leak or other security incidents. This plan must include internal communication protocols, procedures to contain the incident and remedy it, and the obligations to notify the authorities and the persons concerned.
- Dedicated incident management team (CSIRT): set up an incident response team made up of professionals trained to identify, analyse and resolve security incidents. This team must have the tools it needs to act quickly and limit the impact of incidents.
- Transparent communication with patients and stakeholders: in the event of a health data breach, it is crucial to communicate transparently with patients and other stakeholders in order to restore trust. Inform them quickly of the measures taken to solve the problem and to prevent it from happening again.
By implementing these good practices, healthcare institutions strengthen their security posture and put themselves in a better position to protect their patients’ sensitive data against constantly evolving threats.
The security of health data is a complex but essential challenge to guarantee the confidentiality of medical information and to comply with regulations. By putting appropriate security measures in place and adopting a collaborative approach, healthcare institutions can protect their patients’ data effectively.
Tracking these measures, the audits and the corrective actions that follow requires a tool shared by the CISO, the DPO and business departments: that is the role of the Make IT Safe platform. To see how this follow-up is organised in it, request a demo.
