diff --git a/lib/Cleantalk/ApbctWP/Firewall/AntiCrawler.php b/lib/Cleantalk/ApbctWP/Firewall/AntiCrawler.php
index bc3e267e9..9c82db2b3 100644
--- a/lib/Cleantalk/ApbctWP/Firewall/AntiCrawler.php
+++ b/lib/Cleantalk/ApbctWP/Firewall/AntiCrawler.php
@@ -251,11 +251,12 @@ private function runLogSearchForIpPool($ip_array)
      *
      * @param string $ip
      * @param string $status
+     * @param bool   $is_personal
      * @return array
      */
-    private function makeResult($ip, $status)
+    private function makeResult($ip, $status, $is_personal = false)
     {
-        return array('ip' => $ip, 'is_personal' => false, 'status' => $status);
+        return array('ip' => $ip, 'is_personal' => $is_personal, 'status' => $status);
     }
 
     /**
@@ -294,9 +295,12 @@ private function performUaCheck($current_ip)
                 }
 
                 // Blacklisted — record but continue to cookie check
+                // HardCode - write AC dined by UA as personal: blacklisted user-agent may be only personally
+                // `is_personal` makes priority bigger, but we don't have a personal flag in the AC module yet, so this fix is needed
+                $is_personal = true;
                 return array(
-                    'entries'      => array($this->makeResult($current_ip, 'DENY_ANTICRAWLER_UA')),
-                    'early_return' => false,
+                    'entries'      => array($this->makeResult($current_ip, 'DENY_ANTICRAWLER_UA', $is_personal)),
+                    'early_return' => true,
                 );
             }
         }
diff --git a/lib/Cleantalk/Common/Firewall.php b/lib/Cleantalk/Common/Firewall.php
index 1360f2796..628fa91a8 100644
--- a/lib/Cleantalk/Common/Firewall.php
+++ b/lib/Cleantalk/Common/Firewall.php
@@ -3,6 +3,7 @@
 namespace Cleantalk\Common;
 
 use Cleantalk\ApbctWP\Variables\Cookie;
+use Cleantalk\ApbctWP\Variables\Server;
 use Cleantalk\Common\Firewall\FirewallModule;
 use Cleantalk\ApbctWP\Variables\Get;
 
@@ -26,6 +27,11 @@ class Firewall
 {
     public $ip_array = array();
 
+    /**
+     * @var array example array ( 'ua', 'ua_id', 'ua_status')
+     */
+    public $user_agent_data = array();
+
     // Database
     protected $db;
 
@@ -64,6 +70,7 @@ public function __construct($db)
         $this->db       = $db;
         $this->debug    = (bool)Get::get('debug');
         $this->ip_array = $this->ipGet();
+        $this->user_agent_data = $this->getUserAgentData();
     }
 
     /**
@@ -81,6 +88,42 @@ public function ipGet($ips_input = 'real', $v4_only = true)
         return ! empty($result) ? array('real' => $result) : array();
     }
 
+    public function getUserAgentData()
+    {
+        $server_ua = Server::getString('HTTP_USER_AGENT');
+        $ua_table = defined('APBCT_TBL_AC_UA_BL') ? APBCT_TBL_AC_UA_BL : null;
+
+        if ( $ua_table ) {
+            $ua_bl_query = "SELECT * FROM $ua_table ORDER BY `ua_status` DESC;";
+            $ua_bl_results = $this->db->fetchAll($ua_bl_query);
+            foreach ( $ua_bl_results as $ua_bl_result ) {
+                if ( ! empty($ua_bl_result['ua_template']) ) {
+                    $pattern = '%' . str_replace(array('"', '%'), array('', '\%'), $ua_bl_result['ua_template']) . '%i';
+                    $match = preg_match($pattern, $server_ua);
+
+                    if ( $match === false && in_array(preg_last_error(), array(PREG_BACKTRACK_LIMIT_ERROR, PREG_RECURSION_LIMIT_ERROR), true) ) {
+                        continue;
+                    }
+
+                    if ( $match === 1 ) {
+                        $ua_id = TT::getArrayValueAsString($ua_bl_result, 'id');
+
+                        return array(
+                            'ua' => $server_ua,
+                            'ua_id' => $ua_id,
+                            'ua_status' => TT::getArrayValueAsString($ua_bl_result, 'ua_status'),
+                        );
+                    }
+                }
+            }
+        }
+        return array(
+            'ua' => $server_ua,
+            'ua_id' => null,
+            'ua_status' => null,
+        );
+    }
+
     /**
      * Loads the FireWall module to the array.
      * For inner usage only.
@@ -90,11 +133,12 @@ public function ipGet($ips_input = 'real', $v4_only = true)
      */
     public function loadFwModule(FirewallModule $module)
     {
-        if ( ! in_array($module, $this->fw_modules)) {
+        if ( ! in_array($module, $this->fw_modules) ) {
             $module->setDb($this->db);
             $module->ipAppendAdditional($this->ip_array);
             $this->fw_modules[$module->module_name] = $module;
             $module->setIpArray($this->ip_array);
+            $module->setUserAgentData($this->user_agent_data);
         }
     }
 
@@ -120,8 +164,11 @@ public function run()
                 $results[$module->module_name] = $module_results;
             }
 
-            if ($this->isWhitelisted($results)) {
-                // Break protection logic if it whitelisted or trusted network.
+            if (
+                $this->isWhitelisted($results) &&
+                ( ! isset($this->user_agent_data['ua_status']) || (int) $this->user_agent_data['ua_status'] !== 0 )
+            ) {
+                // Break protection logic if it whitelisted, or trusted network, or user-agent not blocked.
                 break;
             }
         }
diff --git a/lib/Cleantalk/Common/Firewall/FirewallModule.php b/lib/Cleantalk/Common/Firewall/FirewallModule.php
index 0734cb7db..fdd49459d 100644
--- a/lib/Cleantalk/Common/Firewall/FirewallModule.php
+++ b/lib/Cleantalk/Common/Firewall/FirewallModule.php
@@ -79,6 +79,14 @@ public function setIpArray($ip_array)
         $this->ip_array = $ip_array;
     }
 
+    /**
+     * @param array $user_agent_data
+     */
+    public function setUserAgentData($user_agent_data)
+    {
+        $this->user_agent_data = $user_agent_data;
+    }
+
     /**
      * @param $result
      *
diff --git a/lib/Cleantalk/Common/Firewall/FirewallModuleAbstract.php b/lib/Cleantalk/Common/Firewall/FirewallModuleAbstract.php
index 11418da76..14024262a 100644
--- a/lib/Cleantalk/Common/Firewall/FirewallModuleAbstract.php
+++ b/lib/Cleantalk/Common/Firewall/FirewallModuleAbstract.php
@@ -40,6 +40,8 @@ abstract class FirewallModuleAbstract
 
     protected $ip_array = array();
 
+    protected $user_agent_data = array();
+
     protected $test_ip;
 
     protected $passed_ip;