Professor Atallah's main research interest is algorithms, in particular for computer security, geometry, and parallel computation. He received a Presidential Young Investigator Award from the National Science Foundation in 1985. A Fellow of the IEEE, he has served on the editorial boards of SIAM Journal on Computing, Journal of Parallel and Distributed Computing, Information Processing Letters, Computational Geometry: Theory & Applications, International Journal of Computational Geometry & Applications, Parallel Processing Letters, Methods of Logic in Computer Science. He was Guest Editor for a Special Issue of Algorithmica on Computational Geometry, has served as Editor of the Handbook of Parallel and Distributed Computing (McGraw-Hill), as Editorial Advisor for the Handbook of Computer Science and Engineering, (CRC Press), and as Editor-in-Chief for Handbook of Algorithms and Theory of Computation (CRC Press). He was selected to serve on the Program Committees of various conferences and workshops (including ACM Symposium on Computational Geometry, SIAM Symposium on Discrete Algorithms, Workshop on Algorithms and Data Structures, IEEE Symposium on Parallel and Distributed Processing, IEEE International Parallel Processing Symposium, International Symposium on Algorithms and Computation, and many others). He was Keynote and Invited Speaker at many national and international meetings.