Diogo Barradas

Refereed Conference Publications

• Flow Correlation Attacks on Tor Onion Service Sessions with Sliding Subset Sum.
  (NDSS 2024) [to appear]
  Daniela Lopes, Jin-Dong Dong, Daniel Castro, Pedro Medeiros, Diogo Barradas, Bernardo Portela, João Vinagre, Bernardo Ferreira, Nicolas Christin, Nuno Santos.
  
• NetShuffle: Circumventing Censorship with Shuffle Proxies at the Edge.
  (IEEE S&P 2024) [to appear]
  Patrick Kon, Aniket Gattani, Dhiraj Saharia, Tianyu Cao, Diogo Barradas, Ang Chen, Micah Sherr, Benjamin E. Ujcich.
  
• Stegozoa: Enhancing WebRTC Covert Channels with Video Steganography for Internet Censorship Circumvention.
  (Asia CCS 2022)
  Gabriel Figueira, Diogo Barradas, Nuno Santos.
  
• Chinese Wall or Swiss Cheese? Keyword filtering in the Great Firewall of China.
  (TheWebConf 2021)
  Raymond Rambert, Zachary Weinberg, Diogo Barradas, Nicolas Christin.
  
• FlowLens: Enabling Efficient Flow Classification for ML-based Network Security Applications.
  (NDSS 2021)
  Diogo Barradas, Nuno Santos, Luís Rodrigues, Salvatore Signorello, Fernando Ramos, André Madeira.
  
• Poking a Hole in the Wall: Efficient Censorship-Resistant Internet Communications by Parasitizing on WebRTC.
  (CCS 2020)
  Diogo Barradas, Nuno Santos, Luís Rodrigues, Vítor Nunes.
  
• Effective Detection of Multimedia Protocol Tunneling using Machine Learning.
  (USENIX Security 2018)
  Diogo Barradas, Nuno Santos, Luís Rodrigues.
  
• Forensic Analysis of Communication Records of Web-based Messaging Applications from Physical Memory.
  (SECRYPT 2017)
  Diogo Barradas, Tiago Brito, David Duarte, Nuno Santos, Luís Rodrigues.
  

Refereed Journal Publications

• DeepSE-WF: Unified Security Estimation for Website Fingerprinting Defenses.
  (PoPETs 2023)
  Alexander Veicht, Cedric Renggli, Diogo Barradas.
  
• Forensic Analysis of Communication Records of Messaging Applications from Physical Memory.
  (Computers & Security, Elsevier, 2018)
  Diogo Barradas, Tiago Brito, David Duarte, Nuno Santos, Luís Rodrigues.
• DeltaShaper: Enabling Unobservable Censorship-resistant TCP Tunneling over Videoconferencing Streams.
  (PoPETs 2017)
  Diogo Barradas, Nuno Santos, Luís Rodrigues.
  

Refereed Workshop Publications

• A First Look at Generating Website Fingerprinting Attacks via Neural Architecture Search.
  (WPES 2023)
  Prabhjot Singh*, Shreya Arun Naik*, Navid Malekghaini, Diogo Barradas, Noura Limam. (*co-first authors)
  
• TIGER: Tor Traffic Generator for Realistic Experiments.
  (WPES 2023)
  Daniela Lopes, Daniel Castro, Diogo Barradas, Nuno Santos.
  
• Rethinking Realistic Adversaries for Anonymous Communication Systems.
  (FOCI @ PETS 2023)
  Kevin Gallagher, Diogo Barradas, Nuno Santos.
  
• Work in Progress: A Glance at Social Media Self-Censorship in North America.
  (STAST @ Euro S&P 2023)
  Wei Hu, Diogo Barradas.
  
• Darwin’s Theory Of Censorship: Analysing the Evolution of Censored Topics with Dynamic Topic Models.
  (WPES @ ACM CCS'22)
  Asim Waheed*, Sara Qunaibi*, Diogo Barradas, Zachary Weinberg. (*co-first authors)
  
• Stargaze: A LEO Constellation Emulator for Security Experimentation.
  (CPSIoTSec @ ACM CCS'22)
  Patrick Tser Jern Kon, Diogo Barradas, Ang Chen.
  
• The Nuts and Bolts of Building FlowLens.
  (LASER @ NDSS 2021)
  Diogo Barradas, Nuno Santos, Luís Rodrigues, Salvatore Signorello, Fernando Ramos, André Madeira.
  
• Towards a Scalable Censorship-Resistant Overlay Network based on WebRTC Covert Channels.
  (DICG @ ACM/IFIP Middleware'20)
  Diogo Barradas, Nuno Santos.
  
• On the unobservability of multimedia-based covert channels for Internet censorship circumvention.
  (ISOC.PT ANRW 2020)
  Diogo Barradas, Nuno Santos, Luís Rodrigues.
  Best Research Paper and Internet Impact Acknowledge Mention
• Assessing the Feasibility of Machine Learning to Detect Network Covert Channels.
  (EuroSys Doctoral Workshop 2018)
  Diogo Barradas.
  

Technical Reports, Posters, and National Conference Publications

• User Sessions on Tor Onion Services: Can Colluding ISPs Deanonymize Them at Scale?.
  (Poster @ ACM CCS'22)
  Daniela Lopes, Pedro Medeiros, Jin-Dong Dong, Diogo Barradas, Bernardo Portela, João Vinagre, Bernardo Ferreira, Nicolas Christin, Nuno Santos.
  
• Identificação de Canais Encobertos no Skype usando Esboços em SDNs.
  (INForum 2019)
  André Madeira, Diogo Barradas, Nuno Santos, Luís Rodrigues.
  Best paper award
• Síntese de Vídeo para Evasão de Censura na Internet.
  (INForum 2016)
  Diogo Barradas, Nuno Santos, Luís Rodrigues.
  

Theses

• Unobservable Multimedia-based Covert Channels for Internet Censorship Circumvention.
  Diogo Barradas (supervised by Professors Luís Rodrigues and Nuno Santos)
  PhD. Thesis, IST, Universidade de Lisboa, July 2021.
• Unobservable Covert Streaming for Internet Censorship Circumvention.
  Diogo Barradas (supervised by Professors Luís Rodrigues and Nuno Santos)
  MSc. Thesis, IST, Universidade de Lisboa, September 2016.