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Matt Smith

Personal photo - Matthew Smith

Dr Matthew Smith

Research Associate

Junior Research Fellow, Kellogg College


Department of Computer Science,
Robert Hooke Building
Directions Postal Address



My work focuses on the security of air-to-ground communications systems and protocols in use for aviation. It takes a long time to develop technologies used in civil aviation; once a product is built and tested, it has to be certified and integrated before it makes its way onto an aircraft. Since most of the systems in use today were not designed with security in mind - or before attacks became feasible - they have a wide install base but rarely have any security provision in place. Rolling out patches or upgrades is equally as difficult as deploying new systems, which means that security solutions have to avoid replacing the original system whilst still trying to fix the problem. 

I am part of the System Security Lab under Ivan Martinovic, which looks at a range of topics from biometric authentication to wireless security.



Paper accepted to NDSS 2020 - A View from the Cockpit: Exploring Pilot Reactions to Attacks on Avionic Systems [PDF coming soon]

Thesis online! Measuring Operational Realities of Security and Privacy for Deployed Avionics [ORA] [PDF]


Privacy Enhancing Technologies Symposium (Barcelona) - July 23-27 - Undermining Privacy in the Aircraft Communications Addressing and Reporting System (ACARS) [YouTube] [Paper]

Real World Crypto (Zurich) - January 10-12 - Modern jets, retro ciphers: how monoalphabetic substitution ciphers are still in use [YouTube] [Slides]


Oxford Computer Science Conference (Oxford) - June 9 - Exploring Weak Ciphers Usage in Business Aircraft Communications

Financial Cryptography and Data Security (Malta) - April 3-7 - Economy Class Crypto: Exploring Weak Cipher Usage in Avionic Communications via ACARS [Paper]


OpenSky Workshop (Oxford) - November 24-25 -Investigating Security & Privacy in ACARS - the Frankenstein of Avionic Communications [Link]

Integrated Communications, Navigations and Surveillance (Washington D.C.) - April 19-21 - On the Security and Privacy of ACARS 


I am currently a member of the Centre for Doctoral Training in Cyber Security, which is within the Computer Science Department. Before starting at Oxford, I did an Undergraduate Masters in Computer Science at the University of Warwick.

If you want to contact me using PGP you can find my keys on with the ID 0x1B53AF07 and fingerprint 6F11 0234 64EC 6FCA FD36 C393 4D69 E423 1B53 AF07

Selected Publications

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