Categorisation of cookies

We use the following cookies:

First Party Cookies 
Cookie Name Cookie Function Cookies Expires After
CMSCookieLevel Specifies which cookies are allowed by the visitor. 1 year
CMSCsrfCookie  Stores a security token that the system uses to validate all form data submitted via POST requests. Helps protect against cross site forgery.  Permanent
ASP.NET_SessionId Keeps the user session ID for security reasons. End of session
CMSPreferredCulture Stores the visitor's preferred content culture. 1 year 
CMSMobileRedirected Indicates if the visitor has been redirected to the mobile version of the website by the Mobile device redirection web part. End of session
CMSCurrentTheme Stores the name of the current visual theme to provide proper design to the dialog windows. 1 day 
Webauthtoken Live ID authentication cookie. Permanent
CMSForumPostAnswer Keeps a list of Question-Answer forum posts in which the user voted for an answer to prevent repeated votes. 1 month 
CMSVotedPolls Keeps a list of polls where the user voted to prevent repeated votes. 1 year
CMSRatedDocuments Keeps a list of documents that the user rated to prevent repeated votes. 1 year
CMSShowDesktopVersion Indicates that the visitor has switched to the desktop (default) version of the website from a specific device profile. 1 year
CMSWindowsUser Stores information for users who were imported from an Active Directory domain during authentication.  Permanent
.ASPXFORMSAUTH Stores the user's encrypted authentication ticket when using forms authentication. 1000 hours (41.7 days)
VisitorStatus Indicates if the visitor is new or returning. Used for tracking the visitors statistic in Web analytics. 20 years 
Source  Store the channel which the user came from (e.g. email, Facebook, Twitter etc). 50 years
Campaign Stores the web analytics Campaign assigned to the visitor. Permanent 
TrackedCampaigns Stores all the web analytics Campaigns, which should be tracked within a JavaScript snippet. 20 minutes 
UrlReferrer Stores the URL referrer from which the user arrives on the website. 1 day
CurrentContact Stores the GUID of the contact related to the current site visitor. Used to track activities on the website. Permanent
CMSAB<ABtestname> Used to track conversions for the test and maintain consistent page content for the visitor. Stores the name of the page variant assigned to the visitor, the list of performed conversions and information whether visitor is included in A/B testing specified by an A/B test. 1 month 
CMSMVT<mvtestname> Stores the combination of variants assigned to the visitor by an MVT test. Used to track conversions for the test and maintain consistent page content for the visitor. 30 days
CMSNoTestMVT<templateid> Stores the currently selected MVT combination for editors in the administration interface. 30 days
CMSShoppingCart Stores a reference to the user's active shopping cart. 1 year
CMSBodyClass Body element class to provide accessibility standards. Permanent 
CMSEd<GUID>Current Stores the current step of Wizard layout web parts. 1 month
CMSUserPage  Stores the IDs (DoumentID, NodelD) of the last visited page. Used for logging landing and exit page web analytics and activities. 20 minutes
ChatLoggedInToken Stores the login state for the Chat application (indicates if the user is in the online state). End of session
ChatSupportLoggedInToken Indicates if the user is logged in to the support chat. End of session
<Window name>_<Group ID>_roomID Stores bindings between groups of chat web parts and chat rooms (for a specific window or tab). 4 days
chat_autoinitchat_displayed_<GUID> Remembers if the Automatically initiated chat web part was shown to the user (prevents multiple chat initiation messages). 60 minutes
chat_kick_roomid_<room ID> Indicates that the user was kicked from the specified chat room (and is not allowed to return). 300 seconds 
StrandsSBS_* Used by the Strands Recommender solely for its own purposes. The cookies are managed on the Strands side. End of session
CMSStrandsTrackEvent_* Stores persistent HTTP context after a page is reloaded. Used for tracking of shopping cart events. End of session
__openid_selector_* Stores OpenId user identification for authentication purposes. 365 days
CMSLandingPageLoaded Indicates that the landing page has already been visited and the landing Page activity is not logged again for the current visitor.  20 minutes
Third Party Cookies
Cookie Cookie Purpose Cookie Expiry Date
Google Analytics_ga Used to distinguish users  2 years
Google Analytics_gid Used to distinguish users 24 hours
Google Analytics_gat  Used to throttle request rate  1 minute
Siteimprove nmstat This cookie is used to help record the visitor’s use of the website.
It is used to collect statistics about site usage such as when the visitor last visited the site.
This information is then used to improve the user experience on the website. This Siteimprove Analytics cookie contains a randomly generated ID used to recognise the browser when a visitor reads a page.
The cookie contains no personal information and is used only for web analytics.
 
33 months
Siteimprove siteimproveses This cookie is used purely to track the sequence of pages a visitor looks at during a visit to the site.
This information can be used to reduce user journeys, and enable visitors to find relevant information quicker.
 
End of session  
Siteimprove szcookiechoice This cookie is used purely to track the sequence of pages a visitor looks at during a visit to the site.
This information can be used to reduce user journeys, and enable visitors to find relevant information quicker.
 
End of session  
_cfduid Used by the third-party CloudFlare service to identify trusted web traffic. It does not correspond to any user id in the web application, nor does the cookie store any personally identifiable information.
 
Defined by third-party
Dot Mailer Web Behaviour Tracking Tracks and identifies a visitor as a dotmailer contact whilst they browse a site’s pages. This data can then be used for better segmenting and targeting of contacts. Ranges from a cookie that expires after 20 minutes (collecting session information on pages visited) to cookies that expire after 365 days
Dot Mailer Site and ROI tracking Tracks and identifies a visitor as a dotmailer contact whilst they browse a site’s pages. This data can then be used for better segmenting and targeting of contacts. One hour
Dot Mailer Surveys and forms - responder Tracks and identifies a respondent as they answer the survey and records when the survey is complete. 365 days after first view of the survey
Dot Mailer Surveys and forms - date started Tracks and identifies a respondent as they answer the survey and records when the survey is complete. 365 days after first view of the survey
Dot Mailer Surveys and forms - confirmation breakout loop tracker Tracks and identifies a respondent as they answer the survey and records when the survey is complete. 365 days after first view of the survey
Dot Mailer Surveys and forms - pop-over Tracks and identifies a respondent as they answer the survey and records when the survey is complete. 365 days after first view of the survey
Dot Mailer Landing pages Identifies the contact to enable personalisation when they visit any landing page from that particular account 30 days after last view
Dot Mailer HTTPS Used by the third-party CloudFlare to assist with security settings for users on shared IP addressed. Defined by third-party