Legal basis of the treatment: The advertising cookies even if they would be necessary for the economic viability of the web site, require a consent of the web user prior to their deposit.
Obligation of information: It is essential to inform the web user of the cookies that can be deposited by specifying those that are obligatory or subject to his consent, as well as the consequences of a possible opposition on his part. The only proposal to the web user to configure his browser is not a valid mode of opposition.
Shelf life: Cookies/ 13 months.
Obligation to cooperate with the CNIL: it is up to the company which has been subject of a notice from the CNIL to show that it has done what is necessary to rectify its infringement.