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What is message security in WCF?

Updated May 6, 2026

Short answer

Message security protects SOAP messages end-to-end.

Deep explanation

It encrypts and signs messages at the message level instead of transport layer.

Real-world example

Banking systems ensuring message integrity.

Common mistakes

  • Using transport security when message-level is required.

Follow-up questions

  • Message vs transport security?
  • Is it slower?

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