Quantum Security Defence

Quantum Security: The Case for Symmetric Key Establishment Systems

Alejandro Giraldo
Alejandro Giraldo
Alejandro Giraldo

Mattia Montagna

CEO

Mattia Montagna is the co-founder and CEO of Quantum Bridge Technologies Inc., a company specializing in quantum-safe cryptography solutions. Prior to founding Quantum Bridge Technologies, Mattia served as Principal Financial Stability Expert at the European Central Bank from 2014 to 2019, where he built a group of quantitative researchers focused on the prediction of financial crises using large data, machine learning and agent-based models. He holds a Bachelor's and Master's degree in Theoretical Physics, a PhD in Quantitative Economics, and completed a postdoctoral research fellowship in Quantum Physics at the University of Toronto. Mattia's expertise spans quantum and classical cryptography, financial markets, and monetary policy.

Watch this full lecture and over 100 other expert lectures on Quantum Technologies in our community with a single subscription.

Quantum Bridge

At Quantum Bridge, we are committed to safeguarding your most valuable assets with cutting-edge, quantum-safe technology. Our mission is to protect critical data and infrastructure from the ever-evolving landscape of cyber threats, ensuring that your organization stays secure today and in the future.

Our Members Work In The Worlds Most Forward Thinking Teams
Follow Us On LinkedIn

  • QryptoCyber
  • IDQ

Our Members Work In The Worlds Most Forward Thinking Teams
Follow Us On LinkedIn

  • QryptoCyber
  • IDQ

Our Members Work In The Worlds Most Forward Thinking Organisations

Follow Us On LinkedIn

  • QryptoCyber
  • IDQ

Membership Packages.

*student and affordable access available here

Expert Vendor Membership

$399 per month

Designated 10hrs advisory

Business amplification

10 user access licence

Dedicated client manager

Informal Peer Review

Membership press release

Partnership Introductions

Collaboration opportunities

Contact Us

Lifetime Individual Membership

$149 Lifetime

Free Webinar Events

80 Hours of Quantum Education

Quantum Cybersecurity Certificate

Quantum Blockchain Certificate

Members only events

Executive training discounts

Events Discounts

Priority QSECDEF 2026

Newsletter & Community

Limited Time Offer 2026 Only

Sign Up

Enterprise Up-skilling Per 10 Users

$499 per year

Access all training & Lectures

10 users access licence

Workforce certifications

Discounts on events

Weekly events attendance

Sign Up

Membership
Packages.

Expert Vendor Membership

$299.00 per month

Designated 10hrs advisory

Business amplification

10 user access licence

Dedicated client manager

Informal Peer Review

Membership press release

Partnership Introductions

Collaboration opportunities

Contact Us

Lifetime Individual Membership

$149 Lifetime

Free Webinar Events

80 Hours of Quantum Education

Quantum Cybersecurity Certificate

Quantum Blockchain Certificate

Members only events

Executive training discounts

Events Discounts

Priority QSECDEF 2026

Newsletter & Community

Limited Time Offer 2026 Only

Sign Up

Enterprise Up-skilling Per 10 Users

$499 per year

Access all training & Lectures

10 users access licence

Workforce certifications

Discounts on events

Weekly events attendance

Sign Up

Membership
Packages.

Expert Vendor Membership

$299.00 per month

Designated 10hrs advisory

Business amplification

10 user access licence

Dedicated client manager

Informal Peer Review

Membership press release

Partnership Introductions

Collaboration opportunities

Contact Us

Lifetime Individual Membership

$149 Lifetime

Free Webinar Events

80 Hours of Quantum Education

Quantum Cybersecurity Certificate

Quantum Blockchain Certificate

Members only events

Executive training discounts

Events Discounts

Priority QSECDEF 2026

Newsletter & Community

Limited Time Offer 2026 Only

Sign Up

Enterprise Up-skilling Per 10 Users

$499 per year

Access all training & Lectures

10 users access licence

Workforce certifications

Discounts on events

Weekly events attendance

Sign Up

Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
Quantum Training
Raminder Kaur
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
William (Bill) TurnerWilliam (Bill) Turner •
I've attended almost every event live and those I missed watched afterwards. Each and every session has nuggets of wisdom to be added to what you will need to know from different perspectives. If you are like me and are on a continual learning journey. Come join us!
click to validate
Quantum Training
Andrew Mallaband
It was a fantastic day, Anna. Thank you again to Quantum Security Defence for the invite and for bringing so many great minds together. It was brilliant to see the momentum around quantum security building across the ecosystem.
click to validate
Quantum Training
Emanuele Formisano
Sono felice di condividere che ho ottenuto una nuova certificazione: Introduction to Quantum Cyber Security di Quantum Security Defence.
click to validate
Quantum Training
Thierry Gaillet
Vielen Dank, Anna. Kudos for the outstanding Quantum Security Defence initiative!
click to validate
Quantum Training
Keisha Watson
Thanks Anna Beata Kalisz Hedegaard! It was lovely seeing you too! 💓 I thoroughly enjoyed the event. The work you, Steve Vaile, and the Quantum Security Defence team put into assisting with organising was noticeably amazing!
click to validate
Quantum Training
Emanuele Broggini
I'm happy to share that I've earned a new certification: Introduction to Quantum Resilient Blockchain Security by Quantum Security Defence!
click to validate
Quantum Training
Syed Luqman Shah
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Robert L. McCaslin JR
I’m happy to share that I’ve obtained a new certification: Introduction to Quantum Cyber Security from Quantum Security Defence!
click to validate
Quantum Training
Adam McElroy
Heading into London with Eclypses colleagues for the Quantum Security Defence event to share hashtag#PQC experiences and pragmatic examples of quantum preparedness
click to validate
Quantum Training
Chris Basener, AAISM®, PMP®, CISM®
Quantum Security Defence provides excellent continuing education! I highly recommend joining! Anna Beata Kalisz Hedegaard is very knowledgeable and presents information relevant to Quantum Computing in a way that is very understandable and usable!
click to validate
Quantum Training
Freddie Beldam
I’m happy to share that I’ve obtained a new certification: Quantum Resilient Blockchain from Quantum Security Defence!
click to validate
Quantum Training
Robert Hann
For those suffering from Quantum breakthrough fatigue, it is not going to let up as this so eloquently explains. I foresee, within 3-4 years, PQ Readiness will emerge as a commercial strategic advantage for organisations with it sitting shoulder to shoulder with QAI, and QCloud, and Q-this and Q-that!
click to validate
Quantum Training
Strategic Operations & Management
Honored to join Quantum Security Defence 🛡️⚛️ Huge thanks to Anna Beata Kalisz Hedegaard and Steve Vaile for welcoming Strategic Operations & Management (SOM) as a new member of Quantum Security Defence (QSD). We’re excited to contribute to this mission-driven community protecting critical systems against emerging quantum-era threats.
click to validate
{ "@context": "https://schema.org", "@type": "Organization", "name": "Quantum Security & Defence", "legalName": "Quantum Security & Defence Ltd", "url": "https://www.quantumsecuritydefence.com", "description": "Vendor-neutral quantum consulting and training organisation delivering quantum technology workshops, advisory services and workforce development for defence, government, finance and critical infrastructure organisations worldwide.", "foundingLocation": { "@type": "Country", "name": "United Kingdom" }, "identifier": { "@type": "PropertyValue", "propertyID": "UK Company Number", "value": "15790806" }, "sameAs": [], "knowsAbout": [ "Quantum technology", "Quantum computing", "Quantum risk", "Post-quantum cryptography", "Quantum workforce development", "Quantum security" "Quantum national security" ] }