Vital Signs

A virtual private network (VPN) creates an encrypted tunnel across a public network, such as the internet, so remote users and sites can securely connect to a private organizational network. This post explains how VPNs work, the difference between remote-access and site-to-site VPNs, why VPNs have become attack targets, and how zero trust approaches are changing remote access in healthcare.

Transport Layer Security (TLS) is the protocol that encrypts and protects data as it moves between applications over a network, from web browsers to APIs and interfaces. This post explains how TLS works, the role of certificates, why older versions are deprecated, how HIPAA guidance relates to it, and what it means for clinical systems.

Malware is any software intentionally designed to harm computers, networks, or data, including viruses, worms, trojans, ransomware, and spyware. This post explains the main types of malware, how it reaches healthcare systems, examples of its impact on patient care, and the layered defenses and everyday habits that reduce risk.

Administrative safeguards are the policies, procedures, and management actions that the HIPAA Security Rule requires to protect electronic protected health information and manage workforce conduct. This post explains each standard, from risk analysis to contingency planning, how required and addressable specifications work, and how nurses take part every day.

Role-based access control (RBAC) grants system access according to a user’s job role rather than to each individual separately. This post explains how RBAC works in EHRs, how it supports HIPAA and the minimum necessary standard, its limits in dynamic clinical settings, and how break-the-glass access, audits, and provisioning complete the picture.

The General Data Protection Regulation (GDPR) is the European Union’s comprehensive data protection law, which treats health data as a special category requiring extra protection. This post explains its principles, lawful bases, individual rights, and breach notification rules, how it compares with HIPAA, and when U.S. healthcare organizations may need to consider it.

Under HIPAA, a breach occurs when protected health information is obtained, accessed, used, or disclosed in a way the Privacy Rule does not permit and that compromises its security or privacy. This post explains the definition and its exceptions, the four-factor risk assessment, notification timelines, how encryption changes the analysis, and why prompt reporting by staff matters.

A limited data set is protected health information with direct identifiers removed but certain dates and geographic details retained, which may be used for research, public health, or health care operations under a data use agreement. This post explains what it includes, how data use agreements work, and how it compares with fully de-identified data.

A firewall is a hardware or software system that controls traffic between networks to prevent unauthorized access. This post explains the main types of firewalls, how hospitals use them to segment networks and protect medical devices, how firewalls fit with Zero Trust, and why they are necessary but never sufficient on their own.

In cybersecurity, a vulnerability is a weakness in a system, process, or control that a threat could exploit. This post explains how vulnerabilities relate to threats and risk, how CVE identifiers and CVSS scores help organizations prioritize, why patching is hard in hospitals, and how compensating controls protect devices that cannot be updated.

The minimum necessary standard is the HIPAA Privacy Rule principle that covered entities should limit uses, disclosures, and requests of protected health information to the minimum needed for the purpose. This post explains what the standard requires, where it does not apply, how role-based access supports it, and how nurses apply it in daily practice.

The accounting of disclosures is a HIPAA right that lets individuals request a list of certain disclosures of their protected health information made by a covered entity during the previous six years. This post explains what the accounting includes and excludes, how it differs from an audit trail, how organizations track disclosures, and what nurses should know.

De-identified health information is health data from which identifiers have been removed so that it cannot reasonably be linked to an individual, and under HIPAA it is no longer protected health information. This post explains HIPAA’s Safe Harbor and Expert Determination methods, how de-identified data differs from a limited data set, and why re-identification risk still matters.

Under the HIPAA Privacy Rule, consent is an optional permission a patient may give for a provider to use and disclose health information for treatment, payment, and health care operations. This post explains how HIPAA consent differs from consent for treatment and from authorization, where 42 CFR Part 2 and state laws add requirements, and how EHRs track patient choices.

Authentication is the process of proving that a user, device, or message is genuine before access is granted. This post explains authentication factors, multifactor authentication, NIST assurance levels, HIPAA’s person or entity authentication standard, the difference between authentication and authorization, and how hospitals balance security with speed for nurses.

Cybersecurity is the practice of protecting computers, networks, and electronic information by preventing, detecting, and responding to attacks and unauthorized access. This post explains the core concepts, the NIST and HHS frameworks healthcare uses, why cyberattacks are patient safety events, and the everyday practices that make nurses part of the defense.

A business associate agreement (BAA) is the HIPAA-required contract between a covered entity and a vendor or partner that handles protected health information on its behalf. This post explains who counts as a business associate, what a BAA must include, how cloud services and subcontractors fit in, and why BAAs matter for nurses using apps and new tools.

An audit trail is the chronological record of who accessed, created, changed, printed, or deleted information in a system, and when. This post explains what EHR audit trails capture, what HIPAA and ONC certification require, how organizations use them to detect inappropriate access and defend the legal record, and what they mean for nurses.

Zero Trust is a cybersecurity strategy that assumes no user, device, application, or network connection is automatically trustworthy, even inside the organization’s own network. This post explains how NIST defines Zero Trust Architecture, why healthcare is adopting it, where it gets difficult, and how it changes daily work for nurses.

Phishing is a social engineering attack that uses deceptive messages to trick people into revealing credentials or other sensitive information, or into running malicious software. This post explains the main forms of phishing, why healthcare is a frequent target, what research shows about click rates, and how organizations and nurses defend against it.