Imperial College London


Faculty of EngineeringDepartment of Computing




+44 (0)20 7594 8237s.demetriou Website CV




Ms Lucy Atthis +44 (0)20 7594 8259




353ACE ExtensionSouth Kensington Campus





I am a Lecturer (Assistant Professor) of Computer Systems Security at the Department of Computing at Imperial College London and the Director of the Applications, Platforms, and Systems Security Research Lab (apss). 

Have you ever wondered how advertisers know that you are interested in that pair of shoes before you do? Have you heard about that baby monitor hacked to harass? Did you know that an adversary can take remote control of a connected vehicle's steering and braking functionality? Or how one can turn your smartphone into a spying device? 

In our group, we study such security and privacy issues in emerging application domains. We utilize network monitoring, access control, optimization, machine learning and natural language processing among others to discover and mitigate prevalent cybersecurity threats and challenges faced by mobile and connected systems.

You can read more about our work at our Lab's website: apss@Imperial.


I am currently on leave visiting Meta Platforms (formerly known as Facebook).
We are always looking for excellent PhD candidates to join our growing team. If you are excited about mobile and IoT systems security, have strong evidence of research experience (demonstrated through publications in international venues), and you are interested in joining apss, please send me an email using “Prospective Security PhD Student” as subject.

Selected Publications


Demetriou S, Jain P, Han K-H, 2018, CoDrive: improving automobile positioning via collaborative driving, IEEE Conference on Computer Communications (INFOCOM), IEEE, Pages:72-80

Tuncay GS, Demetriou S, Ganju K, et al., 2018, Resolving the predicament of android custom permissions, Network and Distributed System Security Symposium, Internet Society, Pages:1-15

Demetriou S, Zhang N, Lee Y, et al., 2017, HanGuard: SDN-driven protection of smart home WiFi devices from malicious mobile apps, 10th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec), ASSOC COMPUTING MACHINERY, Pages:122-133

Demetriou S, Merrill W, Yang W, et al., Free for all! Assessing user data exposure to advertising libraries on android, Network and Distributed System Security (NDSS) Symposium

Demetriou S, Zhou X, Naveed M, et al., 2015, What’s in your dongle and bank account? Mandatory and discretionary protection of android external resources, Network and Distributed System Security Symposium, Internet Society, Pages:1-15

Zhou X, Demetriou S, He D, et al., 2013, Identity, location, disease and more: Inferring your secrets from android public resources, Pages:1017-1028, ISSN:1543-7221

More Publications