Our Team


Muttukrishnan Rajarajan

Chief Executive Officer (CEO)

Professor of Security Engineering at the City, University of London with 18 years of experience in Security and Privacy. He is currently leading cyber security projects funded through EPSRC, EU-H2020, Royal Academy of Engineering, BT and Innovate UK.

Email Id: r.muttukrishnan@city.ac.uk


Shahzaib Tahir

Chief Technical Officer (CTO)

Research Assistant at the City, University of London with 5 years of experience in Cryptography, Information Security and Cloud Security. He has worked on various industrial projects in collaboration with companies including British Telecommunication, Intelligent Voice etc.

Email Id: shahzaib.tahir@city.ac.uk


"Our recent collaboration was focused towards the design and development of single-keyword and multi-keyword Searchable Encryption schemes. We were successfully able to implement and deploy the schemes on BT Alpha Cloud testbed. We are especially thankful to the team at City, University of London for helping us showcase this work at the BT Innovation Week 2017".

Dr Ali Sajjad

Senior Cloud Security Researcher
(British Telecommunications Plc)

"We worked with Rajarajan and his team at City, University of London for an Innovate UK project concerning Privacy Preserving Speech Processing in the Cloud. The project had the ambitious aim to develop encrypted processing of speech and Rajarajan and his team's expertise were instrumental in helping us to plot a course through this new and challenging field. The project was a great success, culminating in a patent for Searchable Encryption applied to Speech Transcripts on the Cloud".

Dr Cornelius Glackin

Research Scientist
(Intelligent Voice Limited)




City, University of London
Northampton Square
London EC1V 0HB
United Kingdom