Dirk is an independent security consultant which has more than 18 years experience in information security, even more in the world of Unix/Linux. He has also a profound networking knowledge from his past. He is engaged in OWASP Germany / Europe and chaired a couple of conferences. Whenever possible he's using Open Source Software. He developed an open SSL/TLS tester for the command line named testssl.sh which is using network sockets.

Twitter: https://twitter.com/drwetter