diff --git a/modules/statistics/php/statistics_dd_site.class.inc b/modules/statistics/php/statistics_dd_site.class.inc
index 7209fa5be1c..124d13f3a38 100644
--- a/modules/statistics/php/statistics_dd_site.class.inc
+++ b/modules/statistics/php/statistics_dd_site.class.inc
@@ -25,10 +25,58 @@ namespace LORIS\statistics;
  */
 class Statistics_DD_Site extends statistics_site
 {
-
     var $query_criteria = '';
     var $query_vars     = array();
-
+    /**
+     * Checking user's permission
+     *
+     * @param \User $user The user whose access is being checked
+     *
+     * @return bool
+     */
+    function _hasAccess(\User $user) : bool
+    {
+        //TODO: Create a permission specific to statistics
+        $hasAccessToAllProfiles = $user->hasAllPermissions(
+            array(
+                'access_all_profiles',
+                'data_entry',
+            )
+        );
+        $hasCenterPermission = false;
+        // TODO: There are no means of set permissions per site
+        // for a given user right now: (e.g.) The user X can have
+        // the permission data_entry on site Y but not on site Z.
+        // Currently, hasCenterPermission() function is only checking
+        // if the user have a given center AND a given permission
+        // not if it have the permission for this specific center.
+        // This logic will be implemented in hasCenterPermission()
+        // in near versions when the permission framework allow it.
+        // If a CenterID is passed in the request, check if the user has the
+        // data_entry permission at the site/center specified by CenterID.
+        if (!empty($_REQUEST['CenterID'])) {
+            $hasCenterPermission = $user->hasCenterPermission(
+                'data_entry',
+                intval($_REQUEST['CenterID'])
+            );
+        } else {
+            // For the short term the user we'll be granted access
+            // if at least have permission AND one of the centers
+            // The filter _checkCriteria() (please see bellow)
+            // takes care of restricting access to sites the user belongs to.
+            // When logic reimplemented on hasCenterPermission(),
+            // _checkCriteria() will take care of retriving information
+            // only for those centers the user has the specific permission.
+            // (please see notes about hasCenterPermission() above)
+            foreach ($user->getCenterIDs() as $centerID) {
+                if ($user->hasCenterPermission('data_entry', intval($centerID))) {
+                    $hasCenterPermission = true;
+                    break;
+                }
+            }
+        }
+        return $hasAccessToAllProfiles || $hasCenterPermission;
+    }
     /**
      * CheckCriteria function
      *
@@ -39,16 +87,53 @@ class Statistics_DD_Site extends statistics_site
      */
     function _checkCriteria($centerID, $projectID)
     {
+        // TODO: There are no means of set permissions per site
+        // for a given user right now: (e.g.) The user X can have
+        // the permission data_entry on site Y but not on site Z.
+        // Currently, hasCenterPermission() function is only checking
+        // if the user have a given center AND a given permission
+        // not if it have the permission for this specific center.
+        // This logic will be implemented in hasCenterPermission()
+        // in near versions when the permission framework allow it
+        // The filter _checkCriteria() takes care of restricting
+        // the user access only to the sites it belongs to.
+        // When logic reimplemented on hasCenterPermission(),
+        // _checkCriteria() will take care of retriving information
+        // only for those centers the user has the specific permission.
         if (!empty($centerID)) {
             $this->query_criteria   .= " AND s.CenterID =:cid ";
             $this->query_vars['cid'] = $centerID;
+        } else {
+            $list_of_permitted_sites = (array) null;
+            $currentUser = \User::singleton();
+            if ($currentUser->hasPermission('access_all_profiles')) {
+                $list_of_permitted_sites = array_keys(\Utility::getSiteList());
+            } else {
+                foreach ($currentUser->getCenterIDs() as $centerID) {
+                    if ($currentUser->hasCenterPermission(
+                        'data_entry',
+                        intval($centerID)
+                    )
+                    ) {
+                        array_push($list_of_permitted_sites, $centerID);
+                    }
+                }
+            }
+            $params    = array();
+            $centerIDs = array();
+            foreach ($list_of_permitted_sites as $key => $siteID) {
+                $params[]            = ":id$key";
+                $centerIDs["id$key"] = $siteID;
+            }
+            $this->query_criteria .=
+                " AND s.CenterID IN (" . implode(',', $params) . ")";
+            $this->query_vars     += $centerIDs;
         }
         if (!empty($projectID)) {
             $this->query_criteria   .= " AND s.ProjectID =:pid ";
             $this->query_vars['pid'] = $projectID;
         }
     }
-
     /**
      * Notexcluded function
      *