Talks
RuhrSec Day 2022: Why TLS is better without STARTTLS
RuhrSec 2019: Johnny, you are fired!
RuhrSec 2018: Efail: Breaking S/MIME and OpenPGP Email Encryption
USENIX Security '18: Efail: Breaking S/MIME and OpenPGP Email Encryption using Exfiltration Channels
TROOPERS 2016: Patch me if you can