Dawid Czagan (@dawidczagan) is an internationally recognized security researcher, trainer, and author of online security courses. He is listed among Top 10 Hackers (HackerOne). Dawid Czagan has found security vulnerabilities in Google, Yahoo, Mozilla, Microsoft, Twitter and other companies. Due to the severity of many bugs, he received numerous awards for his findings.

Dawid Czagan shares his security bug hunting experience in his hands-on trainings “Hacking Web Applications – Case Studies of Award-Winning Bugs in Google, Yahoo, Mozilla and More” and “Bug Hunting Millionaire: Mastering Web Attacks with Full-Stack Exploitation”. He delivered security training courses at key industry conferences such as Hack In The Box (Amsterdam), CanSecWest (Vancouver), 44CON (London), Hack In Paris (Paris), DeepSec (Vienna), HITB GSEC (Singapore), BruCON (Ghent) and for many corporate clients. His students include security specialists from Oracle, Adobe, ESET, ING, Red Hat, Trend Micro, Philips and government sector (recommendations: https://silesiasecuritylab.com/services/training/#opinions).

Dawid Czagan is a founder and CEO at Silesia Security Lab – a company which delivers specialized security testing and training services. He is also an author of online security courses. To find out about the latest in Dawid Czagan’s work, you are invited to subscribe to his newsletter and follow him on Twitter (@dawidczagan).