What is a cookie ?

A cookie is a small text file containing small amounts of information (in particular an identifier in the form of a number, (a session for example, a choice of language, a code aimed at protecting your browsing, the name of the server which deposited and possibly an expiry date) and likely to be saved temporarily, subject to your choices for cookies not necessary for the operation of the site, on the hard drive of your terminal when consulting a site web through your browser software Cookies are managed by your web browser and the user can read them by right-clicking on the web page and “Inspect Code”.

Only the issuer of a cookie is likely to modify the information contained therein. A cookie can be either a session cookie or a permanent (or persistent) cookie.

A session cookie persists only during the browsing session, it is deleted when the browser is closed. A permanent cookie is installed for a fixed period. This type of cookie remains in the terminal until they expire or until they are deleted from the computer through browser settings or extensions.

The cookie does not identify you personally, only the browser on your device. Some cookies require your prior consent before being installed on your device.

What are cookies used for?

Mandatory cookies

These are cookies exclusively deposited by the publisher of the site. They are essential for navigation on the site. These cookies cannot be deactivated or configured, otherwise you will no longer be able to access the site, the site’s services and/or alter their display. They allow you to use the main features of the site and to secure your connection. Thus the deposit of these cookies does not require your prior consent. Their lifetime generally does not exceed the duration of the session.

Functional cookies

These cookies are necessary for the operation of the site. The deposit of these cookies does not require your prior consent. These cookies allow:

To establish anonymous statistics of visits and use of the various components of the site to allow its publisher to administer and improve the said site.
To adapt the presentation of the site to the display preferences of your terminal (language used, display resolution, operating system used, etc.) during your visits to the site, depending on the hardware and viewing software or that your terminal has.

Sites published by CNRS entities use the Matomo audience analysis tool, which complies with GDPR specifications. The Matomo tool can deposit several cookies with a lifetime ranging from session time or a few tens of minutes to 11 months.

Functional cookies deposited by the CNRS:

• Name: _pk_ses
  Service provides: Visitor statistics (Matomo)
  Purpose: This cookie temporarily stores the current session.
  Duration: 30 minutes
• Name: _pk_id
  Service provides: Visitor statistics (Matomo)
  Purpose: This cookie attributes a unique identifier to the user.
  Duration: 11 months
• Name : _pk_testcookie
  Service provides: Visitor statistics (Matomo)
  Purpose: Checks if the browser accepts cookies.
  Duration: Session
• Name: MATOMO_SESSID
  Service provides: CSRF (cross-site request forgery) protection
  Purpose: Prevents fraud, protects the user and the reliability of the data collected by Matomo.
  Duration: Session

“Third Party” or “Third Party” Cookies:

Some sites are likely to include computer applications from third parties who may deposit “social” and advertising, targeting and tracking cookies.

In particular the services:

Consent or refusal to deposit cookies from the Axeptio tool, published by the French company Agilitation retained by the CNRS for the management of cookies
Content viewing by hosts like YouTube, Dailymotion etc for videos.
Sharing information on social networks that allow you to share content from the site with other people or to let these other people know about your consultation or your opinion regarding content on our site.

Cookies placed by these third parties may remember the pages and websites you have visited and may collect personal data such as IP address and share it with third parties. These cookies allow advertising agencies to present you with targeted and personalized advertisements. Their lifespan is variable, ranging from session time or a few tens of minutes to several years.

The CNRS site you are visiting has no control over the process used by content hosts and social networks to collect information relating to your browsing, and associated with the personal data they have.

You can manage the deposit of these cookies. To view certain content offered by the CNRS, you must first accept the cookies of these third parties.

How to manage the cookies deposited by this CNRS site?

How to configure browsers?

In order to manage cookies as closely as possible to your wishes, we invite you to configure your browser taking into account the purpose of cookies:

The internet browser can be set to warn you before a cookie is installed.
The browser can also be configured to refuse all types of cookies or only third-party cookies.
Any cookie already installed on the computer can be deleted.
Each browser must be configured separately to refuse cookies.

Disable/Delete Cookies on your browser

For Internet Explorer™ :

http://windows.microsoft.com/fr-FR/windows-vista/Block-or-allow-cookies