About us Cyber Security Services

Kubertu LTD is a boutique penetration testing company with focus on network, cloud, smart contract audit, web & mobile application penetration testing.

As a deep-dive security testing provider, we uncover vulnerabilities which put your organization at risk, and provide guidance to mitigate them. We bring together the security research, proprietary technologies, and industry-leading security engineers to create the best penetration testing firm in the industry.

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Our Services


Our Blogs

Our security research papers and internal projects.

Smart Contract Automated Testing Guidelines

Author: [email protected] Git Repo: https://github.com/enderphan94/solidity-pentest/ Foreword The documents aim to recap my experience in smart contract automated testing…

Understand Solidity Storage in depth

You can see the details here https://enderspub.kubertu.com/understand-solidity-storage-in-depth

Thinking about Requests

The reason I want to wrap up this topic is just to keep all of my logics and…

Android App – Local Attack

If you have read the "Thinking about request" article. This would be much more relevant. Previously, I had…

Capture The Coin Write-up

Result ‌ My team: Kubertu stayed at top #6‌ My personal work stayed at top #10 ‌Read more:…

Our Core Team

We have 10 years of experience in doing Security Testings. Our engineers have at least OSCP Certified.

Ender Phan
Security Pentest & Audit | OSWE | OCSP | CBSP
Kustas Kurval
Viet Nguyen
Cloud Security Engineer | OSCP | AWS

Audit Processes

We have acknowledged that the security of your product is always a priority, the faster we do our best to discover the holes in your products, the faster we can prevent your loss. As a result, the following steps will help us save your minutes.

  • 1

    Define the scope of an audit

    You will define your targets and the scope of work. Moreover, we will help you in finding the best objects that need to be tested.

  • 2

    Security Testing Plans

    Once the scopes have been defined, we will prepare a Security Testing Plan that corresponds to your objectives and needs.

  • 3

    Signing Contracts

    If you do agree with the Security Testing Plans and Price, a contract will be prepared and signed in original by Kubertu LTD and your vicegerent

  • 4


    Written reports should be submitted as a deliverable of the project. The reports should include, at a minimum, the scope of the work, methodology/approach, executive summary, details of identified vulnerabilities (observation), risk rating, risk rating and specific practical recommendations for remediation.