In healthcare, data security is non-negotiable. Patients and regulatory bodies have equally high expectations, and failure to meet them is not an option. In order to achieve the level of protection necessary, organizations are constantly looking for new security techniques.
If this sounds like you, then one you might find particularly interesting is Zero Trust architecture. This strategy is becoming more popular across every field, due to its low cost and high effectiveness. But what is Zero Trust in healthcare, really? And how does it work?
What Is Healthcare Zero Trust Security?
Zero Trust architecture can be summed up in one sentence: “Never trust, always verify”. In other words, every single attempt to access sensitive systems or data is treated as a potential threat. This does not mean you lock staff members out of the accounts they need to complete their work. Rather, it means that they must verify their identity every single time.
Why Use Zero Trust Architecture in Healthcare?
Historically, healthcare organizations have focused primarily on perimeter security. That means they mainly address threats coming from outside the business. But there’s a critical flaw in this plan: not all threats originate from outside.
In fact, insider threats (where an employee accidentally or maliciously compromises the organization) and social engineering attacks (where staff are tricked into allowing malicious actors access) are now some of the most common reasons that a breach occurs. These threats bypass perimeter defenses entirely, making them useless.
Zero Trust architecture addresses this major vulnerability, by treating every access attempt as a potential attack and requiring verification. When you use this strategy, your entire organization is protected – not just the perimeter.
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Core Principles of Zero Trust Architecture in Healthcare
To implement the Zero Trust model, you’ll need to understand the three key pillars it relies upon:
- Verify Explicitly: Each access attempt must be verified, no matter where it originates from or how legitimate it appears to be.
- Use Least Privilege Access: Not all employees should have access to all data. Each user should have only what they need for their role.
- Assume a Breach: Design your IT infrastructure as if data breaches have already occurred. Segment networks, monitor traffic, and have an incident response plan in place.
These principles should serve as your guiding hand.
Zero Trust Implementation in Healthcare Organizations
1. Develop a Plan
Start with a comprehensive audit of your IT infrastructure, protected health information (PHI), workforce, and existing security controls. Determine:
- Who should be able to access what
- Which behavior should be considered “suspicious”
- What the response should be in these situations
2. Segment the Network
Segment your network either digitally or by using physical devices (such as routers). Split sensitive data and systems from less critical pieces of technological infrastructure. This will allow you to disconnect them in the event of a healthcare data breach.
3. Implement Identity and Access Management (IAM)
Begin using role-based access controls (RBAC) to control who can handle PHI. If they don’t need it, they should not have access. Then, set up a system for continuous verification. For example, you may implement multi-factor authentication (MFA) on every single account.
4. Monitor and Analyze Activity
Deploy tools (such as AI) capable of continuously monitoring for suspicious activity. Then, set up a response system for when a threat is detected. Test it thoroughly, to ensure it works.
5. Enforce Least Privilege Policies
Regularly review user permissions and adjust as needed (for instance, if a staff member leaves or is promoted).
6. Plan a Response
Develop and test an incident response plan, to ensure your organization is prepared for the worst-case scenario.
Protect What Matters Most From Modern Threats
Healthcare organizations can’t afford to take security lightly. A Zero Trust approach provides the extra protection you need to reduce risk and comply with essential regulations. By implementing it carefully and maintaining it effectively, you drastically improve your chances of long-term success.
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FAQs
What is Zero Trust?
Zero Trust operates on a principle of “Never trust, always verify”. This means that every access attempt is treated as a potential threat, and double-checked.
How Hard is it to Implement Zero Trust Architecture in Healthcare?
The difficulty of Zero Trust implementation in healthcare organizations depends on the complexity of your IT infrastructure. Generally speaking, it is a fairly low-cost and low-effort strategy. But the difficulty increases as the number of accounts does.
Can Zero Trust Be Implemented if We Use Legacy Systems?
Zero Trust can be difficult to implement if you’re using legacy systems that don’t support MFA. This is why network segmentation is so important – it protects the rest of your IT environment should a breach occur.
Will Zero Trust Make Work Inconvenient for Staff?
Zero Trust should not make work significantly harder for employees. It adds the extra step of filling out MFA, but this should be relatively easy if set up correctly. Always have a backup plan if staff are unable to complete MFA for any reason.