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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!


  • (1/Sep/2016) A H2020 research project lead by the Navigators group has started. The project is called: DiSIEM - Diversity enhancements for SIEMs
  • (1/July/2016) We have initiated a new FCT research project. The project is called: IRCoC - Intelligent Resilience for Cloud-of-Clouds Services
  • (1/Jan/2016) We have started a collaboration project with colleagues from Brasil, which is supported by CAPES-FCT. The project is called: Resilient Supervision and Control in Smart Grids

Latest publications

  • André Nogueira, Miguel Garcia, Alysson Bessani, Nuno Ferreira Neves, “On the Challenges of Building a BFT SCADA,”, in Proceedings of the International Conference on Dependable Systems and Networks (DSN), 2018, pp. 8.

  • Arjuna Sathiaseelan, Mennan Selimi, Carlos Molina, Adisorn Lertsinsrubtavee, Leandro Navarro, Felix Freitag, Fernando Ramos, Roger Baig, “Towards Decentralised Resilient Community Clouds”, in 2nd Workshop on Middleware for Edge Clouds & Cloudlets, Nov. 2017.


[1] What: NavTalk, When: Wednesday, 2017-Apr-19, 12pm-2pm, Where: room 6.3.38

Bruno Nunes presents Live Migration of Networks
Pedro Alves presents Smarter Routing for a Smarter Grid

[2] What: NavTalk, When: Wednesday, 2017-Apr-05, 12pm-2pm, Where: room 6.3.38

Antonio Casimiro presents Enforcing Timeliness and Safety in Mission-Critical Systems
Eunice Branco presents Cyberthreat Discovery in Open Source Intelligence using Deep Learning Techniques

[3] What: NavTalk, When: Wednesday, 2017-Mar-08, 12pm-2pm, Where: room 6.3.38

Miguel Falé presents Protecting WAP from infinite recursion
Henrique Mendes presents Securing DLMS/COSEM implementations for use in the smart grid

[4] What: NavTalk, When: Wednesday, 2017-Mar-08, 12pm-2pm, Where: room 6.3.38

Adriano Serckumecka presents Collection and monitoring of security events to feed SIEMs
Eric Vial, Max Alaluna,
Fernando Ramos
present Demonstration of Sirius, a Multi-Cloud Network Virtualization Platform

[5] What: NavTalk, When: Wednesday, 2017-Feb-22, 12pm-2pm, Where: room 6.3.38

Nuno Neves presents Intrusion Tolerant Eclipse SCADA
Bruno Vavala presents Secure Tera-scale Data Crunching with a Small TCB

[6] What: NavTalk, When: Wednesday, 2017-Feb-08, 12pm-2pm, Where: room 6.3.38

Tiago Oliveira presents Exploring Key-Value Stores in Multi-Writer Byzantine-Resilient Register Emulations
Max Alanuna presents Sehen: Secure Yet Efficient Virtual Network Embedding in a Multi-Cloud Environment

[7] What: NavTalk, When: Wednesday, 2017-Jan-25, 12pm-2pm,
Where: (exceptionally) room 6.2.46

Altair Santin
(guest speaker)
presents Segurança para ambiente de Smart Grid

(Security for Smart Grid Environments)

João Sousa presents Practical experiences with a BFT middleware database

[8] What: NavTalk, When: Thursday, 2017-Jan-13, 12pm-2pm,
Where: (exceptionally) room 6.1.25

José Rufino presents The (Hidden) Potential of Non-Intrusive Runtime Verification
Inês Gouveia presents Enforcing Safety and Security Through Non-Intrusive Runtime Verification

Past Navtalk Events
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