People throughout this global economy are rightly concerned about the risk they face from the devices and systems surrounding them. Deja vu Security helps organizations and governments take control of this risk. We build secure solutions and provide a full-range of services including strategic insight, proactive advice, tactical assessment and customized development.


Application Security

These days, there is an app for everything. While your app may be driving efficiency, productivity and profit, it may also harbor vulnerabilities that can be exploited; in turn, placing users and customers at risk. In the hyper-competitive business environment of application tech, nothing stings so fiercely as lost customer trust or damaged reputation. Lower adoption rates, decreased sales, and hard-to-shake perceptions are frequent consequences for companies that neglect to secure their applications. 

We provide comprehensive end-to-end security solutions that include security training, design and architecture assessment, code review, threat modeling, penetration testing and more.

Here are some scenarios we can help you secure:

  • Web applications and cloud services
  • Drivers and operating systems
  • Multi-platform desktop and mobile applications
  • Industrial Control and Enterprise Management systems


Engaging Deja vu Security to perform a security review of your blockchain application or implementation enables you to reduce the risk of financial loss, as well as a high risk to reputation at the hands of malicious hackers. The Blockchain and Cryptocurrency Security Service provides you with the ability to identify, understand, and mitigate distributed ledger and implementation risks to blockchain based applications. Our methodology will carefully study the design and test the implementation of your blockchain application, looking for security vulnerabilities that could be used to exploit the distributed system. 

Here are some of the methods we use to understand, analyze, and mitigate blockchain application risk:

  • Threat Modeling & Secure Design Review
  • Security Code Review
  • Ledger Penetration Testing
  • Application Fuzz Testing
  • Cryptocurrency and Transaction Verification and Testing
  • Peer to Peer Network Testing

Read our Ethereum case study, and learn more by clicking the button below.

Embedded Device Security

No matter what you’re doing or what you’ve built, your embedded electronic device almost certainly has security flaws that are yet to be exposed. Products, technologies and entire business models have collapsed because of security breaches that easily could have been prevented. These issues are not always obvious to the development team, nor are they simple to uncover. Trust the security of your mission-critical devices to the experts at Deja vu Security and ask us to perform a full-scope security assessment of your embedded devices.

Here are some scenarios we can help you secure:

  • Medical: Monitoring, Diagnosis, and Implants
  • Avionics: ARINC, Networking, and Integration
  • Automotive: Electronic Control Unit (ECU), Controller Automated Network (CAN), and Remote Integration
  • SCADA: Industrial Control Systems and Smart Grid
  • Payment Systems: Smart Cards, Swipe Systems, Readers

Security Fuzz Testing

Application fuzzing or fuzz testing provides an excellent way to locate potential security issues in complex systems, and requires a smaller time investment than a complete review. Deja vu Security consultants and leading technology companies worldwide use the industry-leading Peach Fuzzer™ platform to fuzz test these systems. Flaws and vulnerabilities in technology solutions surface through Peach Fuzzer’s intelligent fault injection and data mutation. The data provided from the fuzzing sessions provide insights that, combined with analysis, identify and locate previously unknown vulnerabilities. 

Here are some scenarios we can help you fuzz:

  • Web applications and cloud services
  • File formats
  • Network protocols
  • Hardware or driver fuzzing
  • Embedded devices
  • Applications and modules for Android devices


Every product that is not designed with security in mind can be hacked. The best way to protect your products and organization from attacks is to design security into the product development life-cycle. Deja vu Security consultants provide training and expertise to top technology firms, ensuring secure products. 

We have the expertise to train your teams in the following:

  • Web applications and cloud services
  • Applications and modules for Android devices
  • Embedded devices
  • Blockchain technologies