This conference talk from Recon Village at DEF CON 32 explores how OSINT practitioners can leverage Telegram's security vulnerabilities to gather intelligence. Presented by Megan Squire (@MeganSquire0) on August 9, 2024, the 35-minute presentation focuses on Telegram's "similar channels" feature introduced in November 2023 and how it can reveal hidden network connections. Learn how to build OSINT tools for collecting and analyzing Telegram data, apply social network analysis techniques to uncover hidden channel relationships, and identify inauthentic networks used for political influence operations. The talk includes the release of a new OSINT tool specifically designed for Telegram analysis, making it valuable for investigators, journalists, and security researchers seeking to extract intelligence from this widely-used messaging platform.