Jose Antonio Guasch Jose Antonio Guasch is a Spanish security researcher who works as a technical coordinator of the Tiger Team in a Spanish security consulting firm. With more than eight years of experience, his specialties are ethical hacking, pentesting, forensics, systems and webapp security, etc. Jose is one of the main editors of the awarded Spanish security blog SecurityByDefault.com, translator of several OWASP projects and one of the organizers of the Rooted CON security congress held in Madrid where he gave a talk about the (in)security of several components used to manage user certificates through the browser, specifically the ones related with the Spanish Electronic ID.