diff --git a/backend/src/app/config.clj b/backend/src/app/config.clj
index 272e82caa0..09f1a50cd6 100644
--- a/backend/src/app/config.clj
+++ b/backend/src/app/config.clj
@@ -146,7 +146,6 @@
     [:quotes-team-access-requests-per-team {:optional true} ::sm/int]
     [:quotes-team-access-requests-per-requester {:optional true} ::sm/int]
 
-    [:auth-data-cookie-domain {:optional true} :string]
     [:auth-token-cookie-name {:optional true} :string]
     [:auth-token-cookie-max-age {:optional true} ::ct/duration]
 
diff --git a/backend/src/app/http/session.clj b/backend/src/app/http/session.clj
index 4b4ad29a99..ab6d03ebda 100644
--- a/backend/src/app/http/session.clj
+++ b/backend/src/app/http/session.clj
@@ -11,7 +11,6 @@
    [app.common.logging :as l]
    [app.common.schema :as sm]
    [app.common.time :as ct]
-   [app.common.uri :as u]
    [app.config :as cf]
    [app.db :as db]
    [app.db.sql :as sql]
@@ -148,9 +147,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 (declare ^:private assign-auth-token-cookie)
-(declare ^:private assign-auth-data-cookie)
 (declare ^:private clear-auth-token-cookie)
-(declare ^:private clear-auth-data-cookie)
 (declare ^:private gen-token)
 
 (defn create-fn
@@ -164,10 +161,9 @@
                    :user-agent uagent}
           token   (gen-token cfg params)
           session (write! manager token params)]
-      (l/trace :hint "create" :profile-id (str profile-id))
+      (l/trc :hint "create" :profile-id (str profile-id))
       (-> response
-          (assign-auth-token-cookie session)
-          (assign-auth-data-cookie session)))))
+          (assign-auth-token-cookie session)))))
 
 (defn delete-fn
   [{:keys [::manager]}]
@@ -175,13 +171,12 @@
   (fn [request response]
     (let [cname   (cf/get :auth-token-cookie-name default-auth-token-cookie-name)
           cookie  (yreq/get-cookie request cname)]
-      (l/trace :hint "delete" :profile-id (:profile-id request))
+      (l/trc :hint "delete" :profile-id (:profile-id request))
       (some->> (:value cookie) (delete! manager))
       (-> response
           (assoc :status 204)
           (assoc :body nil)
-          (clear-auth-token-cookie)
-          (clear-auth-data-cookie)))))
+          (clear-auth-token-cookie)))))
 
 (defn- gen-token
   [cfg {:keys [profile-id created-at]}]
@@ -222,7 +217,7 @@
                   (-> (assoc ::token-claims claims)
                       (assoc ::token token))))
               (catch Throwable cause
-                (l/trace :hint "exception on decoding malformed token" :cause cause)
+                (l/trc :hint "exception on decoding malformed token" :cause cause)
                 request)))]
 
     (fn [request]
@@ -242,8 +237,7 @@
       (if (renew-session? session)
         (let [session (update! manager session)]
           (-> response
-              (assign-auth-token-cookie session)
-              (assign-auth-data-cookie session)))
+              (assign-auth-token-cookie session)))
         response))))
 
 (def soft-auth
@@ -276,46 +270,11 @@
                     :secure secure?}]
     (update response :cookies assoc name cookie)))
 
-(defn- assign-auth-data-cookie
-  [response {profile-id :profile-id updated-at :updated-at}]
-  (let [max-age    (cf/get :auth-token-cookie-max-age default-cookie-max-age)
-        domain     (cf/get :auth-data-cookie-domain)
-        cname      default-auth-data-cookie-name
-
-        created-at updated-at
-        renewal    (ct/plus created-at default-renewal-max-age)
-        expires    (ct/plus created-at max-age)
-
-        comment    (str "Renewal at: " (ct/format-inst renewal :rfc1123))
-        secure?    (contains? cf/flags :secure-session-cookies)
-        strict?    (contains? cf/flags :strict-session-cookies)
-        cors?      (contains? cf/flags :cors)
-
-        cookie     {:domain domain
-                    :expires expires
-                    :path "/"
-                    :comment comment
-                    :value (u/map->query-string {:profile-id profile-id})
-                    :same-site (if cors? :none (if strict? :strict :lax))
-                    :secure secure?}]
-
-    (cond-> response
-      (string? domain)
-      (update :cookies assoc cname cookie))))
-
 (defn- clear-auth-token-cookie
   [response]
   (let [cname (cf/get :auth-token-cookie-name default-auth-token-cookie-name)]
     (update response :cookies assoc cname {:path "/" :value "" :max-age 0})))
 
-(defn- clear-auth-data-cookie
-  [response]
-  (let [cname  default-auth-data-cookie-name
-        domain (cf/get :auth-data-cookie-domain)]
-    (cond-> response
-      (string? domain)
-      (update :cookies assoc cname {:domain domain :path "/" :value "" :max-age 0}))))
-
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; TASK: SESSION GC
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -342,13 +301,13 @@
   (let [threshold (ct/minus (ct/now) max-age)
         result    (-> (db/exec-one! conn [sql:delete-expired threshold threshold])
                       (db/get-update-count))]
-    (l/debug :task "gc"
-             :hint "clean http sessions"
-             :deleted result)
+    (l/dbg :task "gc"
+           :hint "clean http sessions"
+           :deleted result)
     result))
 
 (defmethod ig/init-key ::tasks/gc
   [_ {:keys [::tasks/max-age] :as cfg}]
-  (l/debug :hint "initializing session gc task" :max-age max-age)
+  (l/dbg :hint "initializing session gc task" :max-age max-age)
   (fn [_]
     (db/tx-run! cfg collect-expired-tasks)))