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Vital Signs

Perspectives on Healthcare IT, clinical informatics, emerging technology, and life at the intersection of nursing and enterprise systems.

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October 21, 2026 · Certification Prep, Cybersecurity and Privacy, Healthcare IT, HIMSS Word of The Day

HIMSS Word of the Day #119: Transport Layer Security (TLS)

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.

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