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The Obfuscated TCP Project

ID: 826f95a2-5b09-5851-acf6-c3999eff07b1

STIX ID: report--826f95a2-5b09-5851-acf6-c3999eff07b1

Feed Name: Zscaler Security Research Blog

Date Published: 2025-04-02

Date Updated: 2026-05-01

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The post reviews ObsTCP, a project that provides lightweight, opportunistic encryption for TCP/HTTP to frustrate large-scale passive eavesdropping by distributing server public keys via DNS and negotiating session keys with Diffie-Hellman; it notes ObsTCP is alpha, eases passive interception but does not fully prevent MitM attacks, and faces adoption hurdles due to client/server support requirements.

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