Summary Insufficient verification over callback_data parameter (May 2018) XSS Telegram.org (December 2018) Privacy of Profile Pictures (March 2019) Sticker crash (July-December 2019) Permissions issues on bugs.telegram.org (December 2020) Intro In Italy we have pizza, pasta and people looking for bugs. …

Introduction A lot of people use git to manage their source codes, this widespread used tool helps developers to deal with their software versions (and much more…) Unfortunately, most people use git on their website without paying attention to an important and particular folder named .git which is created in the…