Welcome to City Defend

A searchable encryption enterprise solution that enables search over encrypted data in the cloud giving the users full control of their data.

City Defend
Enhanced Security & Privacy
City Defend
Reduced Storage Overhead
City Defend
Intra-Cloud Scalability
City Defend
Reduced Network Latency
City Defend

Users have no control of the data stored on the Cloud resulting in the fraud and misuse of the data. The conventional encryption creates problems for the Law Enforcement Agencies by restricting surveillance. The General Data Protection Regulation (GDPR) compliance is also a requirement highlighted by the EU.


The Global Cloud Market is showing a Compound Annual Growth Rate (CAGR) of 22.2%. However, 75% enterprises highlight security concerns related to the Cloud Storage. So in order to benefit from the Cloud, we have to enable people to fully trust the Cloud and the services it has to offer. Therefore, giving people control over their data.


An API and a Cloud Integrated Solution that provides Searchable Encryption-as-a-Service (SEaaS).
This technology allows Cloud Service Providers, Enterprises and their clients to encrypt and outsource the data onto the cloud while being able to search over them.

City Defend


CityDefend concept was perceived back in 2016 and has continued to evolve and is ready to be commercialized. Besides the technical refinement there are also patenting and collaboration activities underway.

Jan 2019

CityDefend: Showcase

Nov 2018

CityDefend: Beta Testing

Oct 2018

CityDefend: MVP Development

Sept 2018

CityDefend: MVP Design

June 2018

CityDefend: Value Proposition Validation

Mar 2018

CityDefend: Commercial Feasibility Study

Jan 2018

CityDefend: Design and Development

Dec 2017

CityDefend: Literature Review

June 2017

BT Innovation Week

Mar 2017

Multi-Keyword SE: Development on BT Cloud

Dec 2016

Single-Keyword SE: PoC Prototype

Jan 2016

Literature Review