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Data in Transit

Networking

Data transmitted over a communications channel.

Definition

Data in transit refers to payloads traveling between endpoints over networks and intermediate infrastructure, vulnerable to interception, replay, and manipulation without transport security.

In plain English Data transmitted over a communications channel.

Why this matters

Why it matters: Transport protection (e.g., TLS) prevents eavesdropping and active man‑in‑the‑middle attacks.

Example

Example: HTTPS requests between a browser and a server.