Internet intrusions: global characteristics and prevalence. - Vinod Yegneswaran; Paul Barford; Johannes Ullrich (SIGMETRICS, 2003)

A New Service for Increasing the Effectiveness of Network Address Blacklists. - Jian Zhang 004; Phillip A. Porras; Johannes Ullrich (SRUTI, 2007)

Highly Predictive Blacklisting. - Jian Zhang 004; Phillip A. Porras; Johannes Ullrich (login Usenix Mag., 2008)

Gaussian process learning for cyber-attack early warning. - Jian Zhang 004; Phillip A. Porras; Johannes Ullrich (Stat. Anal. Data Min., 2010)

A comparative study of cyberattacks. - Seung-Hyun Kim; Qiu-Hong Wang; Johannes Ullrich (Commun. ACM, 2012)

The Effects of Greed and Fear in Symmetric and Asymmetric Volunteer's Dilemma. - Boyoung Kim; Johannes Ullrich; Joachim Krueger (CogSci, 2018)

Emission Spectroscopy-Based Sensor System to Correlate the In-Cylinder Combustion Temperature of a Diesel Engine to NOx Emissions. - Jürgen Wultschner; Ingo Schmitz; Stephan Révidat; Johannes Ullrich; Thomas Seeger (Sensors, 2024)