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All blogs with tag cybersecurity

Reverse Engineering Douyin’s ttwid: Understanding ByteDance’s Client Authentication

November 9, 2025
|
8 mins read

A deep dive into Douyin’s ttwid authentication cookie — exploring its structure, how it’s issued by ByteDance’s servers, and what it reveals about modern web client verification.

  • cybersecurity
  • reverse-engineering
  • web-security
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