QuantSec stands for Quantum Security. Our mission is to help organisations understand their exposure, prioritise remediation and demonstrate progress with evidence.
We help organisations understand where quantum computing could put their cryptography at risk, what needs to change, and how to show the work they have done.
I co-founded QuantSec because I believe this is one of the most consequential cybersecurity challenges of our lifetimes. Encryption and digital signatures underpin the systems people trust every day. Replacing vulnerable cryptography across those systems will take planning, engineering and evidence.
Who is QuantSec?
Before co-founding QuantSec, I worked as a consultant in the defence industry, helping inform decisions about critical systems and how to safeguard them. That experience shaped how I approach security: understand what is at stake by mapping out the attack surface, question assumptions and make decisions you can support with evidence.
The team brings experience from several sides of this problem. Members have held director-level roles at leading blockchain organisations. Others have worked for international cybersecurity bodies, presented at major conferences around the world and worked in national defence in their respective jurisdictions. These backgrounds bring different perspectives on protecting systems, assessing risk and earning trust.
We also have people with more than 15 years of experience founding and working in digital design and marketing. That matters because a security platform needs to make difficult information understandable. Leaders need to know what a finding means and what action to take.
Our engineers are among the most talented I have worked with. Their ability is a major reason I am confident in what we are building. Turning cryptographic research into software that teams can use demands careful engineering as well as a strong understanding of the threat.
This combination is why I believe we are well suited to help lead the response to one of the biggest security threats of our generation. Our experience informs the work, but the work still has to stand up to scrutiny. That is the standard I want QuantSec to be judged by.
What is quantum security?
Quantum security means protecting information and systems against threats made possible by quantum computing. For most organisations, the immediate task is identifying vulnerable cryptography and preparing to adopt post-quantum cryptography, or PQC.
A sufficiently powerful quantum computer could break widely used public-key algorithms such as RSA and elliptic-curve cryptography. These support encrypted connections, identity checks and digital signatures. The consequences extend beyond exposed data to forged signatures, compromised software trust and risks to digital assets.
This does not mean quantum computers can break all encryption today. Nor does it mean every algorithm is affected in the same way. Leaders need a clear account of their actual exposure, rather than a general warning that everything is unsafe.
Why quantum security matters now, not later
The question is not simply when a quantum computer will become powerful enough to attack today's public-key cryptography. We already know that to be the case. It is whether your organisation can complete its transition before that happens, and whether information collected today will still be sensitive then.
This is the problem known as harvest now, decrypt later (HNDL). An attacker can collect encrypted information now and retain it in the hope of decrypting it with a future quantum computer. Medical records, financial information, intellectual property and confidential business communications can remain valuable for years.
Replacing a vulnerable system later cannot retrieve copies an attacker has already collected. If your data needs long-term confidentiality, the preparation window starts before a practical quantum attack becomes possible.
Migration also takes time. Teams must find cryptographic dependencies, assess suppliers, test replacements and keep services running. NIST released its first three finalised post-quantum cryptography standards in 2024 and encourages organisations to begin their transition. There is no need to wait for a precise prediction of when the threat will arrive.
What QuantSec wants to achieve
I found from my time as a security consultant, most people do not understand what quantum security actually is, or how their code can be made resistant against it. Our goal is to help organisations make quantum risk visible, assess it against a defined scope, and take practical steps to reduce it. We want security teams and leaders to work from the same evidence.
That means answering useful questions: Which cryptographic primitives are in use? Which could be vulnerable to a sufficiently powerful quantum computer? Where do they appear in the code and its dependencies? What should the team address first?
We bring together reporting, research and a quantum security platform to help turn those answers into decisions, with visualisations that mean your team actually understands the full attack surface across your infrastructure but also every single piece of infrastructure you are interacting with.
Quantum security reports that support decisions
A QuantSec quantum security report gives leaders and technical teams a shared record of the systems or repositories reviewed, the findings, their severity and recommended actions. It identifies quantum-vulnerable cryptographic primitives within the assessment scope and sets out remediation priorities.
The report includes a Quantum Readiness (QCR score) to help communicate the assessed position. The score is a summary, not a substitute for reading the findings or a guarantee that a system is secure.
You can choose to make your score public while keeping your vulnerabilities private. This allows you to share an assessed position without publishing a roadmap for attackers. In the world of AI risk, code is more important than ever in order to avoid the trap of AI agents catching "low hanging fruit".
Signed reports can be checked using the QuantSec Verify tool. Verification checks the report's signature and integrity. It does not mean that every risk has been removed or that systems outside the report's scope have been assessed.
A platform for assessment, monitoring and migration
The QuantSec platform brings repository scanning, findings and reporting into a common workflow: connect, scan, classify, certify and sign, then publish to a profile where appropriate.
A report tied to a defined release provides a fixed reference for review. Monitoring helps teams understand changes as code and dependencies move on. Both are useful: one records what was assessed, while the other helps keep the work current.
For organisations that need implementation support, our optional premium quantum migration service helps scope the engagement, migrate and test changes, and prepare the release for review. Recommendations should lead to work that can be checked, not sit in a report without an owner.
Research with a practical purpose
Our research focus is the link between cryptographic risk and real implementation choices. Which findings matter in a particular system? What does current guidance mean for an engineering team? What evidence is needed to assess a proposed change?
Post-quantum cryptography migration is not simply an algorithm swap. Compatibility, performance, key management and supplier support all affect the result. Our aim is to help teams evaluate these trade-offs and make decisions they can explain.
What early action tells users and investors
Starting now can demonstrate that leadership takes long-term security seriously. A documented assessment, funded remediation plan and evidence of progress give users, customers and investors something concrete to evaluate.
Quantum readiness is a practical commitment: know your exposure, address the highest-priority risks and show progress. It gives stakeholders a clearer basis for trust than an unsupported claim to be quantum-safe.
Credibility comes from stating what has been reviewed, what remains exposed and what is being done. A QuantSec report can also serve as a third-party security review and support evidence presented to auditors or compliance boards.
Where should an organisation start?
Assign an owner. Give someone responsibility for quantum risk across security, engineering and procurement.
Identify long-lived data and critical systems. Start where future disclosure or signature compromise would cause the most harm.
Establish a cryptographic inventory. Include relevant code, libraries, certificates, protocols and supplier dependencies.
Assess and prioritise. Use a defined scope to separate urgent work from lower-priority changes.
Plan, test and review. Give remediation an owner, budget and review date. Track progress as systems change.
You do not need a complete migration programme before taking the first step. You need a clear view of your starting point.
Talk to QuantSec
We built QuantSec to help organisations prepare before quantum risk becomes an operational crisis. If you want to understand your exposure, commission a report or discuss migration support, speak with our team or email [email protected].
Lewis Strawbridge
Co-Founder & CEO, QuantSec
