QCT Studio
Secure what has to last.
Post-quantum security, cybersecurity and technology for banks, governments and regulated enterprises, from post-quantum migration to AI agents in production. Senior people, named leads, evidence you can take to the board.
ExperiencePast work experience
State Street
Broadcom
Parfin
Playtika
QDefence
The problem
Data stolen today can be decrypted later.
Harvest now, decrypt later: traffic and archives captured today can be broken once quantum computers mature. The question is whether your migration finishes first.
- X
Shelf life
How long the data must stay confidential
- Y
Migration time
How long moving to post-quantum takes
- Z
Threat horizon
Years until a relevant quantum computer
If X + Y is greater than Z, that data is already exposed.
Run the test on your dataWhy now
Security is moving from retrofit to mandatory spend.
PQC
2035
Standards deadline
NIST finalised its first post-quantum standards in 2024 and targets removal of quantum-vulnerable algorithms by 2035, with earlier action for high-risk systems.
Source: NIST
AI
89%
Enterprise AI adoption
The share of enterprises now using AI, up from 55% in 2023.
Source: McKinsey, The state of AI in 2026
Risk
$4.99M
Average breach cost
A record, up 12% year on year. AI-enabled breaches average about $6M.
Source: IBM, Cost of a Data Breach 2026
Engagements
A short menu of repeatable work.
Scoped to a clear outcome, priced in the scoping conversation.
- 6–10 weeks, fixed scope / BanksQuantum-readiness and crypto-agility assessmentWhere quantum-vulnerable cryptography lives across your estate, which data outlives it, and the order in which to move it, with a plan your board and regulator will accept.
- Scoped in proposal / SecurityPost-quantum migration roadmapTurn exposure into a phased programme: which systems move first and which wait on a dependency, where hybrid operation keeps trust unbroken, who decides, funds and accepts residual risk, and the measures that show it is moving rather than merely planned.
- Scoped in proposal / Security architectureCrypto-agility strategyPost-quantum will not be the last cryptographic change. We find where algorithms, certificates and trust anchors are hard-coded, then design the architecture, governance and operating model that let you swap them without rebuilding the estate.
- 10–16 weeks / Regulated enterprisesSecure AI and agent deployment pilotPut an agent into production with identity, least-privilege tools, data controls and red-teaming designed in from the first sprint, on a weekly delivery cadence.
- Scoped in proposal / InvestorsAI and cybersecurity technical diligenceAn operator's read on the security, cryptography and AI claims behind a transaction, a vendor selection or a partnership, before you commit.
- Monthly retainer / SecuritySecurity architecture and resilience advisorySenior judgement on security architecture, resilience and incident readiness, on a monthly retainer, for teams that need it more often than they can hire it.
- Scoped in proposal / BanksTalent network and placementSenior security, cryptography and AI hires for your team, from people who have shipped in regulated environments.
- Cash plus negotiated equity / Corporate sponsorsVenture build and researchTurn a validated deep-tech problem into a company, with clean IP ownership and a paying design partner from the start.
Why QCT Studio
Senior people. Evidence over opinion.
QCT Studio is the operating practice of QCT Capital LLC: a small, senior team working on post-quantum, cyber and AI security for regulated enterprises. We take on work we can lead ourselves, and we put our findings in terms that survive an audit.
Senior pods, named leads
The people who scope the work deliver it. No pyramid of juniors behind a partner.
Evidence over opinion
Every finding is tied to a named primitive, system and data class, so it survives audit.
Conflicts in writing
Where a recommendation touches a party we have a relationship with, we disclose it in writing before you decide.
- 20+
- Years in cyber leadership and applied cryptography
- 23
- Approved patents across cryptography, security and ML
- Exit
- Co-founded SC Square, acquired by Broadcom
How we work
Five practices, one evidence base.
- Post-quantum01
Move to post-quantum before it is urgent.
PQC migration, crypto-agility, key management and quantum-safe networks: find every algorithm, key and certificate, decide what moves first, and migrate to hybrid ML-KEM and ML-DSA designs without breaking production.
- PQC migration
- Crypto-agility
- Key management
- Quantum-safe networks
- AI & privacy02
Use AI without giving your data away.
Model protection, confidential computing and data governance, so sensitive data stays governed when it meets a model, and you can prove it to a regulator.
- Data governance
- Model protection
- Confidential computing
- Privacy engineering
- AI agent security03
Agents in production, on your terms.
Agent identity, least-privilege tool access, prompt-injection defence and red-teaming, designed into the pilot from the first sprint rather than bolted on after it.
- Agent identity
- Least-privilege tools
- Prompt-injection defence
- Red-teaming
- Cybersecurity04
Defence that holds when it matters.
Security architecture, resilience and incident readiness for finance and critical systems, from senior people on call.
- Security architecture
- Resilience
- Incident readiness
- Detection & response
- Technology05
Deep tech, made dependable.
Diligence, architecture and venture builds for deep tech: quantum, advanced cryptography, confidential computing and AI infrastructure, judged by people who have shipped it.
- Deep-tech diligence
- Quantum & cryptography
- AI infrastructure
- Venture build
Method
From first scan to board report. Every finding tied to named primitives.
- 1
Assess
Know your exposure, by data class.
- 2
Discover
Find every algorithm, key and certificate.
- 3
Migrate
Move to hybrid post-quantum designs, safely.
- 4
Assure
Prove it, continuously, to boards and regulators.
Who we work with
Find your starting point.
- Banks & financial institutionsLong-lived data, strict regulators and production systems that cannot go down. Start with your quantum exposure, by data class, and a plan supervisors will accept.
- GovernmentsAgencies and public bodies working to post-quantum deadlines, with citizen and sovereign data that must stay secret for decades. Inventory, prioritise and migrate on a timeline you can defend.
- Family officesInside your family office, protecting its own data, people and payments, and across your portfolio companies, with an operator's read on the security and AI behind each one.
- Security for AI startupsAgent identity, model and data protection, and red-teaming, so your product passes the enterprise security review that stands between you and the contract.
Our commitment
The people who scope your work deliver it, and every finding is tied to evidence that survives audit.
Let's talk
Start with two weeks.
A fixed-fee readiness sprint: an exposure heatmap, a Mosca analysis and your top ten priorities.
Get in touch
contact@qctcapital.com