My main research interests are in:

• Security: Usable security, Security Policies, Botnet detection
• Machine Learning techniques applied to Intrusion detection.
• Operating Systems and Distributed Systems 

Other interests:

• Programming Languages / Compilers
• Natural Language Processing
   

• Bayesian Bot Detection Based on DNS Traffic Similarity (PDF)
  R. Villamarín-Salomón and J. Brustoloni.
  24th Annual Symposium on Applied Computing – Computer Security Track (SAC’2009), ACM, Honolulu, HI, Mar. 8-12, 2009 (AR: 17%).

• Efficient Detection of Bots in Subscribers’ Computers (PDF)
  J. Brustoloni, N. Farnan, R. Villamarín-Salomón, D. Kyle.
  International Conference on Communications (ICC 2009), IEEE, Dresden, Germany, 2009.

• Evaluating the Usability of Usage Controls in Electronic Collaboration (PDF)
  J. Brustoloni, R. Villamarín-Salomón, P. Djalaliev and D. Kyle.
  4th Symposium on Usable Privacy and Security (SOUPS 2008), ACM, Pittsburgh, PA, July 2008 (AR: 27%).

• Identifying Botnets Using Anomaly Detection Techniques Applied to DNS Traffic (PDF)
  R. Villamarín-Salomón and J. Brustoloni. The Fifth IEEE Consumer Communications & Networking Conference (CCNC). January 2008 .

• (POSTER) Identifying Botnets Using Anomaly Detection Techniques Applied to DNS Traffic
  R. Villamarín-Salomón and J. Brustoloni. 2007 Proceedings of the anti-phishing working groups 2nd annual eCrime researchers summit. October 2007.

• Improving Security Decisions with Polymorphic and Audited Dialogs (PDF).
  J. Brustoloni and R. Villamarín-Salomón.
  3rd Symposium on Usable Privacy and Security (SOUPS'2007), ACM, Pittsburgh, PA, pp. 76-87, July 2007 (AR: 32%). 

• (POSTER) Improving User Decisions about Opening Potentially Dangerous Attachments in E-mail Clients (PDF)
  R. Villamarín-Salomón, J. Brustoloni (University of Pittsburgh), Matthew DeSantis and Ashley Brooks (Carnegie Mellon University).
  2006 Symposium on Usable Privacy and Security (Poster). April 2006.

• The Design and Implementation of the Chronobot/Virtual Classroom (CVC) System.
  S. K. Chang, Xin Li , Ricardo Villamarín, Dan Lyker, Chris Bryant.
  The twelfth International Conference on Distributed Multimedia Systems (DMS'06), Grand Canyon, USA (link).

• An Empirical Study of Data Speculation Use on the Intel Itanium 2 Processor (PDF)
  Markus Mock, Ricardo Villamarín, and José Baiocchi
  In 9th Annual Workshop on Interaction Between Compilers and Computer Architecture (INTERACT-9), San Francisco, February 13, 2005