What are cookies?

Cookies are small pieces of data, stored in text files, that are stored on your computer or other devices when websites are loaded in a browser. They are widely used to remember you and your preferences, either for a single visit (through a session cookie) or for multiple repeat visits (using a persistent cookie). They ensure a consistent and efficient experience for visitors and perform essential functions, such as allowing users to register and remain logged in.

Cookies may be set by the site that you are visiting (known as first party cookies), or by other websites who serve up content on that site (third party cookies).

Cookies set by GlobalCluster

Cookies are used by GlobalCluster in a variety of ways. The cookies set will depend on the specific features that are enabled on a site. The cookies are only set when a user interacts with one of these features, or to allow admin functions to be performed from within the site’s dashboard.

Further details are provided in the following tables, which list the various cookies that are set for visitors and registered users of sites with the Jetpack GlobalClusterplugin installed.

Cookies set upon visitor interaction

Jetpack Comments

Cookie NameDurationPurpose
comment_author_{HASH}347 daysRemembers the value entered into the comment form‘s namefield. Specific to the site from which it is set. This cookie mirrors one set by the core WordPress software for commenting purposes.
comment_author_email_{HASH}347 daysRemembers the value entered into the comment form‘s emailfield. Specific to the site from which it is set. This cookie mirrors one set by the core WordPress software for commenting purposes.
comment_author_url_{HASH}347 daysRemembers the value entered into the comment form‘s URL field. Specific to the site from which it is set. This cookie mirrors one set by the core WordPress software for commenting purposes

Mobile Theme

Cookie NameDurationPurpose
akm_mobile3.5 daysRemembers whether or not a user wishes to view the mobile version of a site.

Subscriptions

Cookie NameDurationPurpose
jetpack_comments_subscribe_{HASH}347 daysRemembers the state of the post and comment subscriptioncheckboxes.
jetpack_blog_subscribe_{HASH}347 daysRemembers the state of the post and comment subscriptioncheckboxes.

EU Cookie Law Banner

Cookie NameDurationPurpose
eucookielaw30 daysRemembers the state of visitor acceptance to the EU Cookie Law banner.

Cookies set for registered users / admins

General

Cookie NameDurationPurpose
jetpackState[message]sessionStores the state message passed back to the user across requests
regarding module activation.
jetpackState[error]sessionStores the state’s error type passed back to the user across requests regarding module activation.
jetpackState[error_description]sessionStores the state’s error description passed back to the user across requests regarding module activation.
jetpackState[module]sessionStores the state’s module name passed back to the user across requests regarding module activation.
jetpackState[privacy_checks]sessionStores modules that may require additional privacy-related verification for private sites so that we can properly communicate these to the user.
jetpackState[php_errors]sessionStores any PHP errors found just before PHP shuts down execution.
jetpackState[deactivated_plugins]sessionStores the names of any standalone plugins that needed to be deactivated by Jetpack so that these can be communicated back to the user.
jetpackState[network_nag]sessionStores a true value if Jetpack is network-activated, and the plugin needs to communicate to the user that they must connect it on each child site of the network.

Jetpack Protect

Cookie NameDurationPurpose
jpp_math_pass1 dayRemembers if a user has successfully completed a math captcha to prove that they’re a real human.

Secure Sign On

Cookie NameDurationPurpose
jetpack_sso_redirect_to1 hourAllows for redirect URLs to be stored, which is necessary for Secure Sign On to work.
jetpack_sso_remember_me1 hourStores me values locally, rather than requiring them to be passed to WordPress.com each time.
jetpack_sso_wpcom_name_{HASH}1 week or cleared after successful loginRemembers the WordPress.com display name to show on login page.
jetpack_sso_wpcom_gravatar_{HASH}1 week or cleared after successful loginRemembers URL of the Gravatar image to show on login page.
jetpack_sso_original_request1 hourStores the URL of the original login request.
jetpack_sso_nonce10 minutesUsed for nonce verification.

Stats

Cookie NameDurationPurpose
stnojs2 daysThe Stats feature sets this admin-area-only cookie if the user requests to view stats reports without javascript turned on.

Registered on the site, but not connected to WordPress.com

Cookie NameDurationPurpose
tk_aisessionStores a randomly-generated anonymous ID. This is only used within the admin area.

Some Jetpack features make use of third-party applications and services to enhance the experience of visitors. These include social media platforms, such as Facebook and Twitter (via our Sharing feature). As a result, cookies may be set by these third parties, and used by them to track your online activity. We have no direct control over or access to the information that is collected by these cookies.

Additional cookies are set for those using wp-admin, and through the connected WordPress.com account.

Controlling cookies

Visitors may wish to restrict the use of cookies, or completely prevent them from being set. Most browsers provide for ways to control cookie behavior, such as the length of time they are stored — either through built-in functionality or by utilizing third-party plugins.

To find out more about how to manage and delete cookies, visit aboutcookies.org. For more details about advertising cookies, and how to manage them, visit youronlinechoices.eu (EU based), or aboutads.info (US based).

It’s important to note that restricting or disabling the use of cookies can limit the functionality of sites, or prevent them from working correctly.