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We are the Navigators, a research team on distributed systems, their architectures, their algorithms, in their several skins: fault tolerance, real-time, security, and combinations thereof.

We also pursue the quest for the right balance between science and technology. Some people say that Informatics (a.k.a. computer science and engineering) belongs to a new breed, of what are called techno-sciences. We believe that techno-scientists should accompany theoretical mastery with a deep knowledge of their environment — computer technology — as well as astro-physicists know the sky, or marine biologists know the sea.

We study new theories to explain distributed systems, and new algorithms to take advantage from them. But we also like to do proof-of-concept experiments about the theory we work on. We try that our papers and theses tell a good story as clearly as possible. We work hard for our demonstrations to be convincing and captivating. Because we believe science is made for others.

Our greatest riches are our culture, and our researchers and students. If you believe in the former, you can become one of the latter. Welcome!


Latest publications

  • Vinicius Vielmo Cogo, Alysson Bessani, “Efficient Storage of Whole Human Genomes”, in Poster in the 11th European Conference on Computer Systems (EuroSys 2016), London, UK, Apr. 2016.  Poster Presentation Award

  • Catia Alexandra Bimbo Magalhaes, “Towards Secure Software-Defined Networks”, Master’s thesis, Mestrado em Informática, Departamento de Informática, Faculdade de Ciências da Universidade de Lisboa, Oct. 2015.

  • Rodrigo de Medeiros, “Secure Monitoring for a Secure Smart Grid”, Master’s thesis, Mestrado em Engenharia Informática, Departamento de Informática, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal, Sept. 2015.


[1] What: NavTalk, When: Friday, 2016-May-20, 12pm-2pm, Where: room C6.3.38

Alysson Bessani presents The DiSIEM (Diversity-enhancements for SIEMs) Project
Tiago Santos presents Intrusion detection and response on mobile devices

[2] What: NavTalk, When: Friday, 2016-May-06, 12pm-2pm, Where: room C6.3.38

Nuno Ferreira presents Securing OEM controllers in a SDN environment
Fernando Ramos presents Blending photons with electrons to reduce the energy footprint of IPTV networks

[3] What: NavTalk, When: Friday, 2016-Apr-22, 12pm-2pm, Where: room C6.3.38

Sebastian Zug presents GNSS Quality Forecasting for UAV Trajectory Planning in Urban Environments
André Correia presents Discovering security threats in social networks

[4] What: NavTalk, When: Friday, 2016-Apr-08, 12pm-2pm, Where: room C6.3.38

Pedro Costa presents Medusa: An Efficient Cloud Fault-Tolerant MapReduce

(Friday, 2016-Mar-25 Easter break -- No Navtalk)

[5] What: NavTalk, When: Friday, 2016-Mar-11, 12pm-2pm, Where: room C6.3.38

Frederico Brito presents Towards Resilient Segment Routing
Joel Alcantara presents Low-cost Cloud-based Disaster Recovery for Transactional Databases

[6] What: NavTalk, When: Friday, 2016-Feb-26, 12pm-2pm, Where: room C6.3.38

Fabien Charmet
(Telecom Sud Paris)
presents Implementation of security policy in SDN environment
Luis Ferrolho presents Secure and Dependable Virtual Network Embedding

[7] What: NavTalk, When: Friday, 2016-Feb-12, 12pm-2pm, Where: room C6.3.38

Pedro Ferreira presents Entropy based unsupervised selection of data sets for improved model fitting
José Soares presents Live migration of networks in a multi-cloud environment

[8] What: NavTalk, When: Friday, 2016-Jan-29, 12pm-2pm, Where: room C6.3.38

Diogo Duarte presents Vulnerability Detection in SDN Switches
Tiago Oliveira presents Exploring Key-Value Stores in register emulations

[9] What: NavTalk, When: Friday, 2016-Jan-15, 12pm-2pm, Where: room C6.3.38

Nuno Neves presents Making WAP Really Discover 0-day Vulnerabilities with Less Errors
Pedro Maia presents Resilient Communications in Smart Grids

Past Navtalk Events
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