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Posts by Daniel Trauner

Bugcrowd Badge Challenge Writeup

A few weeks ago, we wrote about our learnings from designing and building a badge for the first time for DEF CON 26. One area we would like to rethink for next year is the approach to the badge challenge,…

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Car Hacking in the Cloud (for Cheap) at DEF CON, Part 2

Last month, we wrote an introductory overview of our experience running the second annual Car Hacking Village CTF infrastructure at DEF CON 25. Most notably, our use of Zappa to deploy Flask-based CTFd on AWS Lambda and API Gateway resulted in a $1.50 bill for the entire month of July (excluding database instances), while providing a number of operational advantages over last year’s traditional infrastructure.

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Car Hacking in the Cloud (for Cheap) at DEF CON

Each summer, members of the security community convene in Las Vegas for a week of talks, networking, and other activities at a series of conferences. At DEF CON specifically, a number of organizations host Capture the Flag (CTF) hacking competitions in which contestants either compete against each other trying to access other teams’ infrastructure while defending their own (“Attack with Defense”), or by racing to rack up the most points before the contest ends with answering standalone questions (“Jeopardy style”).

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