My research is focused on the following areas:

• Large Systems Security & Survivability
  
  
• Secure Peer-to-peer and overlay networking
  
  
• Distributed Systems Reliability, Fairness and Statistical Inference
  
  
• Privacy and Anonymity
  

Teaching:

    Spring 2008: IT 862, Models for Computer Security
    Spring 2008: ISA 656, Network Security

Recent Publications:

• PAR: Payment for Anonymous Routing
  Elli Androulaki, Mariana Raykova, Shreyas Srivatsan, Angelos Stavrou, and Steven M. Bellovin.
  To appear in 8th Privacy Enhancing Technologies Symposium, Leuven, Belgium July 23 - July 25, 2008.
  
  
• The Hidden Difficulties of Watching and Rebuilding Networks.
  Michael Locasto and Angelos Stavrou.
  IEEE Security and Privacy, vol. 6, no. 2, pp. 79-82, Mar/Apr, 2008.
  
  
• Pushback for Overlay Networks: Protecting against Malicious Insiders
  Angelos Stavrou, Michael E. Locasto, and Angelos D. Keromytis. To appear in the Proceedings of the 6th International Conference on Applied Cryptography and Network Security (ACNS). June 2008, New York, NY.(Acceptance Rate: 21.1%)
  
  
• Casting out Demons: Sanitizing Training Data for Anomaly Sensors
  Gabriela F. Cretu, Angelos Stavrou, Michael E. Locasto, Salvatore J. Stolfo, and Angelos D. Keromytis. To appear in the Proceedings of the IEEE Symposium on Security & Privacy. May 2008, Oakland, CA. (Acceptance Rate: 11.2%)
  
  
• Online Training and Sanitization of AD Systems (extended abstract)
  Gabriela F. Cretu, Angelos Stavrou, Michael E. Locasto, Salvatore J. Stolfo. NIPS 2007 Workshop on Machine Learning in Adversarial Environments for Computer Security, December 2007, Vancouver, B.C., Canada.
  
  
• On the Infeasibility of Modeling Polymorphic Shellcode
  Yingbo Song, Michael E. Locasto, Angelos Stavrou , Angelos D. Keromytis, and Salvatore J. Stolfo. In Proceedings of the 13th ACM Conference on Computer and Communications Security (CCS), pp. 541 - 551. October/November 2007, Alexandria, VA. Also available as Columbia University Computer Science Department Technical Report CUCS-007-07. (Acceptance rate: 18.1%)
  
  
• A Study of Malcode-Bearing Documents
  Weijen Li, Salvatore Stolfo, Angelos Stavrou, Elli Androulaki, and Angelos D. Keromytis. In Proceedings of the 4th GI International Conference on Detection of Intrusions & Malware, and Vulnerability Assessment (DIMVA), pp. 231 - 250. July 2007, Lucerne, Switzerland. (Acceptance rate: 21%)
  
  
• From STEM to SEAD: Speculative Execution for Automated Defense.
  Michael E. Locasto, Angelos Stavrou, Gabriela F. Cretu, and Angelos D. Keromytis.
  In Proceedings of the USENIX Annual Technical Conference (USENIX 2007), pp. 219-232, June 2007, Santa Clara, CA. An earlier draft of this work is available as Columbia University CS Tech Report CUCS-004-07 (Acceptance rate: 18.75%)
  

Professional Activities:

    Program Organization:

    Program co-Chair, 1st Workshop on Virtual Machine Security (VMSec): 2008

    Program Committee Member:

    Network and Distributed System Security Symposium (NDSS): 2009
    USENIX Security Symposium: 2007, 2008
    Applied Cryptography and Network Security (ACNS) Conference: 2008
    Information Security Conference (ISC): 2008
    European Workshop on System Security (EUROSEC): 2008
    European Symposium on Research in Computer Security (ESORICS): 2008
    Workshop on Cyber Security Experimentation and Test : 2008
    International Workshop on Security and Privacy in Wireless and Mobile Computing
    Networking and Communications: 2008

Thesis:

    "An Overlay Architecture for End-to-End Service Availability" (awarded with distinction)[Slides]