Djena_Bertrand

Description This the writeup on the challenges we solved duri...

ctfs-1

This repository contains notes and code on past CTF Capture The Flag challenges, with a focus on web, crypto, and realistic challenges. The repository is organized into several sections, each covering a different type of challenge. The web section includes write-ups on various web-based challenge...

ctf

This repository contains a writeup for the CSAW CTF 2015. The writeup includes descriptions of various challenges, including web, exploit, crypto, reversing, and forensics challenges. The writeup is organized into sections, with each section describing a specific challenge. The challenges include...

Crowdsourcing a Tool for Application Vulnerability Research

Pulling in security help on a project has traditionally meant either hiring more full-time help, or bringing in an outside consultant. Enterprises and vendors alike, however, are starting to really go outside the perimeter these days and are taking advantage of crowdsourcing. Given the paranoia i...

Try something new – Beat the BlueHat Challenge!

August 2014 Update: The BlueHat Challenge is on hold. We will make an announcement on this blog when we re-start the BlueHat Challenge. Thanks for your interest! --- We were inspired by the Matasano Crypto Challenges. So we built a similar series of fun challenges to exercise reverse engineering,...