Citadel Team

The secure messaging, audio & video conferencing solution

Citadel Team is the best solution for secure professional communication. Your discussions are available in real time on all your mobile devices and PCs. End-to-end encryption ensures that only your devices can decrypt your messages. To ensure complete privacy and airtightness between our customers, each company has a dedicated infrastructure operated by Thales and hosted in France.

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Features and Security

secure messaging

Secure Messaging

Create open chat rooms within your organization for up to 10,000 users, and invite-only private rooms to discuss sensitive information using end-to-end encryption. One-to-one chat allow you to discuss internally or with partners on any device connected with Citadel Team. Send messages and share unlimited files of any type ( up to 200Mo/file ).

Manage your users fleet and choose your notification preferences. Citadel can also automatically send information: bots, news, files...

secure calls

Secure Calls

With encrypted HD telephony, you can make secure calls wherever you are. Your calls are encrypted from end to end using the toughest encryption techniques. Secure calls enable communications between users with secure telephony, and are compatible with Android or iOS using Push notification technologies on Apple (APNS) and Google (GCM) platforms.

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Audio and video conferencing

Initiate, schedule or participate in a conference easily from any device, accessible to participants both inside and outside your organization. Share your screen to encourage collaboration. Whether in a video conference or using an audio conference, sessions and their duration are unlimited.

Each feature is designed with security and privacy in mind, while enhancing the user experience.

security and privacy

Security and privacy

Operated by Thales and hosted in France, Citadel Team offers a high level of security and guarantees no data are sold. Our commitment to security includes:

  • All data flows are secured in a TLS1.2-AES256 tunnel.
  • Sovereignty, with the entire service hosted in datacenters in France.
  • Data is encrypted from end to end.
  • Control of two-factor authentication for greater security.
  • User identification via e-mail.

Citadel Team is also in the process of obtaining the certification CSPN from ANSSI.

Our engagements

Usability

As easy to use as your personal communication applications, Citadel Team is compatible with all your devices and offers standard instant communication capabilities.

Collaboration

Citadel Team centralizes and simplifies communications. Centralization of conversations and sharing files in private or public personalized spaces for your projects, encourages internal and external collaboration, while increasing the productivity and accelerating the responsiveness of your teams.

Security

Every feature is designed with security and privacy in mind. Our end-to-end data encryption capabilities ensure your organization that none of your communications can be intercepted or hacked.

Deployment & Administration

simplified

Simplified deployment

Citadel is a SaaS application available for download, and registration takes less than 2 minutes using an e-mail address, the only trusted information.

You can use the services from your desktop client (Mac / PC) or web browser  and also from your smartphone (iOS / Android).

Discover Citadel Team now by creating your free account and take advantage of our secure instant messaging service.

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Company

With Enterprise mode, you have a dedicated instance with an administration platform to manage your fleet. As an option, you can subscribe to additional features such as secure calls, audio and video conferencing, etc. It is also possible quickly connect business services such as marketing intelligence, project management, HR services, CRM, etc.

cybels

Cybels Hub DR

Hosted on TrustNest R-Cloud, the first “Restricted Distribution” certified cloud, Citadel Team lets you communicate and exchange “Restricted Distribution” level information. This service combines the Citadel Team and Cryptobox solutions on a single platform to facilitate and favour collaboration in “Restricted Distribution” mode. Collaborate safely and securely between industrial partners and French ministries.

Discover the Cybels Hub DR service

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Fleet management

To ensure complete privacy and airtightness between our customers, each company has a dedicated infrastructure operated by Thales and hosted in France.

Deploy, control and manage your corporate fleet from the Citadel Team management console. 

Manage your user subscription options from the management console: remotely deactivate devices, control your employees’ access and activity.

Video demonstration

Introducing Citadel Team, our secure and collaborative communication platform. It allows you to invite members to chat rooms with your internal staff and external partners. Our dedicated infrastructure operated by Thales in France with end-to-end encryption ensures your privacy. Citadel Team synchronizes your communications on all your devices in real time, enabling you to quickly respond in times of crisis.

faq
FAQ

We are committed to providing you with responsive, personalized support to ensure an optimal user experience. Don't hesitate to consult our online support resources to get started with Citadel Team. A dedicated support team is also available to assist customer companies and answer any questions they may have about using our platform.

Need help ?

Customer testimonials

SANOFI

“In 2018, after the Notpetya attacks, we felt it was vital to have a secure communication tool so that our crisis and management teams could talk to each other very quickly, and therefore get organized and take the first decisions in the event of a cyber-incident. For us, the Citadel solution was best suited to our needs.”

Citadel Team

We're delighted to share with you the inspiring testimonial of one of our customers, Mathieu Valmier, Cybersecurity and Cloud Expert as Cyber Resilience and Cyber Cloud Security Referent in the public sector. As part of his job, he explains that CITADEL TEAM helps to guarantee internal communication and keep their business running smoothly. We're proud to have been able to support Mathieu Valmier in his move towards a sovereign solution. His testimonial is a concrete demonstration of the effectiveness of our solutions and their impact on an organization's activity.

Download Citadel TEAM

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Download Citadel team for PC

mobile

Download Citadel team for Mobile

solution cards

Security updates

CVE-2023-5217 | Codec VP8 Buffer overflow
Publication date : 2023-10-30
State : public
Description : The desktop client is based on Electron based on Chromium. And Chromium versions prior to version 117.0.5938.132 with libvpx prior to 1.13.1 are vulnerable to out of bounds memory via shared crafted Video or potentially inline crafted Conferences.The Android app based on libvpx prior to 1.13.1 is vulnerable to out of bounds memory via shared crafted Video or potentially inline crafted Conferences.The Ios app based on libvpx prior to 1.13.1 is potentially vulnerable to out of bounds memory via inline crafted Conferences..
Affected versions:
Windows and Macosx Citadel desktop clients 7.8.1 and lower IOS app 7.8.1 and lower
Android 7.8.1 App and lower.
Remediation: 

Update the Citadel destop to version 10/02/2023-7.8.2 or higher; if not automatically lauched - the update can be launched from the update menu.
Update the Citadel Android App tà 10/05/2023-7.8.2 version or higher.
Update the Citadel Ios App to 10/24/2023-7.9 version or higher.


CVE-2023-4863 | Heap buffer overflow in WebP
Publication date: 2023-09-26
State: public
Description: The desktop client is based on Electron based on Chromium. And Chromium versions prior to version 116.0.5845.190 are vulnerable out of bounds memory via crafted WebP images.
Affected versions: Windows and Macosx Citadel desktop clients 7.8.0 and lower
Remediation: update the Citadel destop to version 09/14/2023-7.8.1 or higher; if not automatically launched - the update can be launched from the update menu.


CVE-2022-1293 | XSS vulnerability in Citadel
Publication date: 2022-04-13T09:42:00.000Z
State: public
Description: We have discovered a vulnerability that can affect the Citadel client. The embedded neutralization of Script-Related HTML Tag, was by-passed in the case of some extra conditions.
Affected versions: 7.1.1 and lower
Remediation: update to version 7.1.2 or higher
web client: just reload the page
desktop client: launch update from the menu