Zoom Introduces Post-Quantum End-to-End Encryption for Enhanced Security

Zoom Video Communications has become the first Unified Communications as a Service (UCaaS) provider to introduce post-quantum end-to-end encryption (E2EE) globally. Aimed at improving security in Zoom Workplace, specifically Zoom Meetings, this pioneering feature aims to protect user data from future threats posed by quantum computers. The new E2EE technology ensures only meeting participants have access to encryption keys, making encrypted data indecipherable via Zoom’s servers. The feature employs the Kyber 768 algorithm, a standardisation in progress by the National Institute of Standards and Technology (NIST).

  • Post-quantum end-to-end encryption (E2EE) is now available for Zoom Workplace, starting with Zoom Meetings, making Zoom the first UCaaS provider to offer this advanced security feature.
  • Zoom has taken a proactive stance against potential future threats by introducing post-quantum E2EE to safeguard user data from “harvest now, decrypt later” attacks that may arise with the advancement of quantum computers.
  • The post-quantum E2EE encryption works by providing only meeting participants access to encryption keys, ensuring that encrypted data relayed through Zoom’s servers remains indecipherable, using the Kyber 768 algorithm standardised by NIST.

A Quantum Leap in Video Conferencing Security

In a world where cyber threats are continually escalating, the security of our digital communication has never been more crucial. Zoom, the renowned video conferencing platform, has recently taken a proactive step forward in this regard. In a ground-breaking move, the company has incorporated post-quantum end-to-end encryption (E2EE) into their Zoom Workplace.

Zoom: The Pioneer in Post-Quantum Security

Zoom has indeed blazed a trail by becoming the first Unified Communications as a Service (UCaaS) provider to implement a post-quantum E2EE solution in video conferencing. This enhanced security feature is currently available for Zoom Meetings, with plans to extend it to Zoom Phone and Zoom Rooms shortly.

The Threat of Quantum Computing

The advent of quantum computing poses an interesting paradox for digital security. Although quantum computers capable of breaking modern encryption are not widespread yet, they pose a potential risk of decrypting currently encrypted traffic in the future. This phenomenon, known as “harvest now, decrypt later,” has necessitated an anticipatory approach to encryption technology.

Zoom’s latest security enhancement, post-quantum E2EE, is a response to this looming threat. By upgrading their encryption algorithm, Zoom is ensuring that even if attackers manage to capture encrypted network traffic now, they won’t be able to decrypt it in the future when quantum computers become more advanced.

“With the launch of post-quantum E2EE, we are doubling down on security and providing leading-edge features for users to help protect their data. At Zoom, we continuously adapt as the security threat landscape evolves, with the goal of keeping our users protected.” – Michael Adams, Chief Information Security Officer at Zoom.

How Does Post-Quantum E2EE Work?

Post-quantum E2EE functions similarly to standard E2EE, ensuring that only meeting participants have access to the encryption keys used to secure the session. This means that even if data traverses through Zoom’s servers, it remains indecipherable due to the lack of a decryption key.

To further fortify against “harvest now, decrypt later” attacks, Zoom’s post-quantum E2EE utilises Kyber 768, a sophisticated algorithm being standardised by the National Institute of Standards and Technology (NIST).

Final Thoughts

Zoom’s introduction of post-quantum E2EE is a commendable step forward in the realm of digital communication security. It demonstrates a proactive approach to potential threats and reaffirms the company’s commitment to user data protection. In an age where cyber threats are increasingly sophisticated, Zoom’s move is indeed a quantum leap in ensuring secure video conferencing.


Q: What is the significance of post-quantum end-to-end encryption (E2EE) in Zoom Workplace?
A: Post-quantum E2EE in Zoom Workplace enhances security by safeguarding user data against potential future threats from advanced quantum computers.

Q: What makes Zoom the first UCaaS company to offer post-quantum E2EE for video conferencing?
A: Zoom is the first UCaaS provider to offer post-quantum E2EE for video conferencing, demonstrating its proactive stance in upgrading algorithms to withstand future threats.

Q: How does post-quantum E2E encryption work in Zoom Meetings?
A: When users enable E2EE for their meetings, Zoom’s system provides only the participants with access to encryption keys, ensuring that encrypted data relayed through Zoom’s servers remains indecipherable.

Q: Which algorithm does Zoom’s post-quantum E2E encryption use to defend against “harvest now, decrypt later” attacks?
A: Zoom’s post-quantum E2E encryption uses Kyber 768, a NIST-standardized algorithm known as the Module Lattice-based Key Encapsulation Mechanism (ML-KEM) in FIPS 203.


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