diff --git a/cleantalkantispam.php b/cleantalkantispam.php
index b1c6913..28f9cb7 100644
--- a/cleantalkantispam.php
+++ b/cleantalkantispam.php
@@ -58,6 +58,7 @@
 define('APBCT_TBL_AC_LOG',        'cleantalk_ac_log');   // Table with firewall logs.
 define('APBCT_TBL_AC_UA_BL',      'cleantalk_ua_bl');    // Table with User-Agents blacklist.
 define('APBCT_TBL_SESSIONS',      'cleantalk_sessions'); // Table with session data.
+define('APBCT_RATE_LIMITS',       'cleantalk_rate_limits'); // Table with different rate limits data.
 !defined('APBCT_TBL_STORAGE') && define('APBCT_TBL_STORAGE', 'cleantalk_custom_storage'); // Table with session data.
 define('APBCT_SFW_SEND_LOGS_LIMIT', 1000);
 define('APBCT_SPAMSCAN_LOGS',     'cleantalk_spamscan_logs'); // Table with session data.
@@ -1645,13 +1646,13 @@ public function onAjaxCleantalkantispam() {
                         return json_encode(['allow' => 1, 'msg' => '']);
                     }
 
-                    return ['error' => 'Not working'];
+                    return json_encode(['error' => 'Not working']);
 
                 default :
-                    return ['error' => 'Wrong action was provided'];
+                    return json_encode(['error' => 'Wrong action was provided']);
             }
         }
-        return ['error' => 'No action was provided'];
+        return json_encode(['error' => 'No action was provided']);
     }
 
     ////////////////////////////
diff --git a/cleantalkantispam.xml b/cleantalkantispam.xml
index 177cf8d..d74bc7a 100644
--- a/cleantalkantispam.xml
+++ b/cleantalkantispam.xml
@@ -7,7 +7,7 @@
 	<license>GNU/GPLv2</license>
 	<authorEmail>welcome@cleantalk.org</authorEmail>
 	<authorUrl>cleantalk.org</authorUrl>
-	<version>3.2.6</version>
+	<version>3.3.0</version>
 	<description>PLG_SYSTEM_CLEANTALKANTISPAM_DESCRIPTION</description>
 	<scriptfile>updater.php</scriptfile>
 	<files>
diff --git a/composer.json b/composer.json
index de67488..729d4fd 100644
--- a/composer.json
+++ b/composer.json
@@ -6,7 +6,8 @@
         "cleantalk/api": "*",
         "cleantalk/cron": "*",
         "cleantalk/remote-calls": "*",
-        "cleantalk/storage-handler": "*"
+        "cleantalk/storage-handler": "*",
+        "cleantalk/rate-limiter": "*"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5.52",
diff --git a/lib/Cleantalk/Common/RateLimiter/RateLimiter.php b/lib/Cleantalk/Common/RateLimiter/RateLimiter.php
new file mode 100644
index 0000000..2f83075
--- /dev/null
+++ b/lib/Cleantalk/Common/RateLimiter/RateLimiter.php
@@ -0,0 +1,227 @@
+<?php
+
+namespace Cleantalk\Common\RateLimiter;
+
+/**
+ * Abstract base class for rate limiting functionality
+ * Defines the core rate limiting logic and required methods for implementation
+ */
+abstract class RateLimiter
+{
+    /**
+     * Rate limiter configuration object
+     *
+     * @var RateLimiterConfig
+     */
+    protected $config;
+
+    /**
+     * Current timestamp
+     *
+     * @var int
+     */
+    protected $current_ts;
+
+    /**
+     * Unique identifier for the current request
+     *
+     * @var string
+     */
+    protected $uid;
+
+    /**
+     * IP address of the current request
+     *
+     * @var string
+     */
+    protected $ip;
+
+    /**
+     * User agent of the current request
+     *
+     * @var string
+     */
+    protected $ua;
+
+    /**
+     * Flag indicating if the process completed successfully
+     *
+     * @var bool
+     */
+    public $process_ok = true;
+
+    /**
+     * RateLimiter constructor.
+     *
+     * @param RateLimiterConfig $config Configuration for the rate limiter
+     */
+    public function __construct(RateLimiterConfig $config)
+    {
+        $this->config = $config;
+        $this->current_ts = time();
+
+        $this->setIP();
+        $this->setUA();
+        $this->setUID();
+    }
+
+    /**
+     * Sets the unique identifier for the current request
+     * Must be implemented by child classes
+     *
+     * @return void
+     */
+    protected function setUID(): void
+    {
+        $this->uid = md5($this->ip . $this->ua . $this->config->type);
+    }
+
+    /**
+     * Determines if the current request should be rate limited
+     *
+     * @return bool True if request should be allowed or error occurred, false if rate limited
+     */
+    public function checkPassed(): bool
+    {
+        try {
+            if (!$this->healthCheck()) {
+                throw new \Exception('HEALTH_CHECK_FAILED');
+            }
+
+            if (!$this->cleanUp()) {
+                throw new \Exception('CLEANUP_FAILED');
+            }
+
+            $uid_data = $this->selectUIDData();
+            $record_found = false !== $uid_data;
+
+            if ($record_found && !$uid_data->data_ok) {
+                throw new \Exception('UID_DATA_INVALID');
+            }
+
+            if ($record_found && $this->isLocked($uid_data)) {
+                return false; // Block here by limit exceeded
+            }
+
+            if ($record_found) {
+                if (!$this->increment($uid_data)) {
+                    throw new \Exception('INCREMENT_FAILED');
+                }
+            } else {
+                $uid_data = new RateLimiterDTO(
+                    array(
+                        'uid' => $this->uid,
+                        'type' => $this->config->type,
+                        'counter' => 1,
+                        'last_call' => $this->current_ts,
+                        'created_at' => $this->current_ts,
+                        'ip' => $this->ip,
+                        'ua' => $this->ua,
+                    )
+                );
+                if (!$uid_data->data_ok) {
+                    throw new \Exception('UID_DATA_INVALID__INSERT');
+                }
+                if (!$this->insert($uid_data)) {
+                    throw new \Exception('INSERT_FAILED');
+                }
+            }
+        } catch (\Exception $e) {
+            $this->process_ok = false;
+            $this->handleErrors($e->getMessage());
+            return true;
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks if the current UID has exceeded the rate limit
+     *
+     * @param RateLimiterDTO $uid_data
+     * @return bool True if rate limited, false otherwise
+     */
+    protected function isLocked(RateLimiterDTO $uid_data): bool
+    {
+        return $uid_data->data_ok && ($uid_data->counter > $this->config->limit);
+    }
+
+    /**
+     * Performs basic health check on configuration
+     *
+     * @return bool True if configuration is valid, false otherwise
+     */
+    protected function healthCheck(): bool
+    {
+        if ($this->config->limit < 1) {
+            return false;
+        }
+        if ($this->config->period < 1) {
+            return false;
+        }
+        if ($this->config->type === null) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Retrieves rate limit data for the current UID
+     * Default implementation returns empty data
+     *
+     * @return RateLimiterDTO|false Rate limit data or false if not found
+     */
+    protected function selectUIDData()
+    {
+        return new RateLimiterDTO(array());
+    }
+
+    /**
+     * Sets the IP address for the current request
+     * Must be implemented by child classes
+     *
+     * @return void
+     */
+    abstract protected function setIP(): void;
+
+    /**
+     * Sets the IP address for the current request
+     * Must be implemented by child classes
+     *
+     * @return void
+     */
+    abstract protected function setUA(): void;
+
+    /**
+     * Handles errors that occur during rate limiting
+     * Must be implemented by child classes
+     *
+     * @param string $msg Error message
+     * @return void
+     */
+    abstract protected function handleErrors(string $msg): void;
+
+    /**
+     * Increments the counter for an existing rate limit record
+     * Must be implemented by child classes
+     * @param RateLimiterDTO $uid_data
+     * @return bool True on success, false on failure
+     */
+    abstract protected function increment(RateLimiterDTO $uid_data): bool;
+
+    /**
+     * Inserts a new rate limit record
+     * Must be implemented by child classes
+     * @param RateLimiterDTO $uid_data
+     * @return bool True on success, false on failure
+     */
+    abstract protected function insert(RateLimiterDTO $uid_data): bool;
+
+    /**
+     * Cleans up expired rate limit records
+     * Must be implemented by child classes
+     *
+     * @return bool True on success, false on failure
+     */
+    abstract protected function cleanUp(): bool;
+}
diff --git a/lib/Cleantalk/Common/RateLimiter/RateLimiterConfig.php b/lib/Cleantalk/Common/RateLimiter/RateLimiterConfig.php
new file mode 100644
index 0000000..93f673b
--- /dev/null
+++ b/lib/Cleantalk/Common/RateLimiter/RateLimiterConfig.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace Cleantalk\Common\RateLimiter;
+
+/**
+ * Configuration class for rate limiter settings
+ *
+ * Holds the configuration parameters that define how rate limiting should be applied
+ * for a specific type of request (e.g., login attempts, comment submissions, etc.)
+ */
+class RateLimiterConfig
+{
+    /**
+     * Type of rate limit (e.g., 'login', 'comment', 'registration')
+     * Used to differentiate between different kinds of rate-limited actions
+     *
+     * @var string|null
+     */
+    public $type = null;
+
+    /**
+     * Maximum number of allowed requests within the configured period
+     * Once this limit is exceeded, further requests will be rate limited
+     *
+     * @var int
+     */
+    public $limit = 5;
+
+    /**
+     * Time period in seconds during which the request limit applies
+     * For example, a period of 60 with limit 10 means 10 requests per minute
+     *
+     * @var int
+     */
+    public $period = 5;
+
+    /**
+     * RateLimiterConfig constructor.
+     *
+     * @param string $type  The type of rate-limited action
+     * @param int    $limit Maximum number of allowed requests
+     * @param int    $period Time period in seconds for the limit
+     */
+    public function __construct(string $type, int $limit, int $period)
+    {
+        $this->type = $type;
+        $this->limit = $limit;
+        $this->period = $period;
+    }
+}
diff --git a/lib/Cleantalk/Common/RateLimiter/RateLimiterDto.php b/lib/Cleantalk/Common/RateLimiter/RateLimiterDto.php
new file mode 100644
index 0000000..59a8372
--- /dev/null
+++ b/lib/Cleantalk/Common/RateLimiter/RateLimiterDto.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace Cleantalk\Common\RateLimiter;
+
+use Cleantalk\Common\Templates\Dto;
+
+/**
+ * Data transfer object for rate limit UID records
+ *
+ * @package CleantalkSP\Common\RateLimit
+ */
+class RateLimiterDto extends Dto
+{
+    /**
+     * Current request counter for the UID
+     *
+     * @var int
+     */
+    public $counter = 0;
+
+    /**
+     * Timestamp of the last request
+     *
+     * @var int
+     */
+    public $last_call = 0;
+
+    /**
+     * Timestamp when the record was created
+     *
+     * @var int
+     */
+    public $created_at = 0;
+
+    /**
+     * IP address associated with the UID
+     *
+     * @var string
+     */
+    public $ip = '';
+
+    /**
+     * User agent associated with the UID
+     *
+     * @var string
+     */
+    public $ua = '';
+
+    /**
+     * Unique identifier for the rate limit record
+     *
+     * @var string
+     */
+    public $uid = '';
+
+    /**
+     * Type of rate limit (e.g., 'login', 'comment', etc.)
+     *
+     * @var string
+     */
+    public $type = '';
+
+    /**
+     * Flag indicating if all required data fields are present
+     *
+     * @var bool
+     */
+    public $data_ok = false;
+
+    protected $obligatory_properties = [
+        'uid',
+        'type',
+        'ip',
+        'ua',
+        'counter',
+        'last_call',
+        'created_at',
+    ];
+
+    /**
+     * RateLimitUidData constructor.
+     *
+     * @param array $raw_data Raw data array from database
+     */
+    public function __construct($raw_data)
+    {
+        try {
+            parent::__construct($raw_data);
+            $this->data_ok = true;
+        } catch (\Exception $_e) {
+            $this->data_ok = false;
+        }
+    }
+}
diff --git a/lib/Cleantalk/Custom/AltCookies.php b/lib/Cleantalk/Custom/AltCookies.php
index facc7aa..2b2e8ee 100644
--- a/lib/Cleantalk/Custom/AltCookies.php
+++ b/lib/Cleantalk/Custom/AltCookies.php
@@ -3,6 +3,8 @@
 namespace Cleantalk\Custom;
 
 use Cleantalk\Common\Mloader\Mloader;
+use Cleantalk\Common\RateLimiter\RateLimiterConfig;
+use Cleantalk\Custom\RateLimiter\RateLimiter;
 use JFactory;
 
 class AltCookies
@@ -11,6 +13,10 @@ class AltCookies
 
 	private const SESSION_TABLE__NAME = 'cleantalk_sessions';
 
+    private const LIMITER_NAME = 'alt_cookie_limit';
+
+    private const LIMITER_LIMIT = 10;  // 10 requests per minute allowed
+
 	/**
 	 * @var string[]
 	 */
@@ -81,6 +87,13 @@ public static function get($name)
 
 	public static function setFromRemote($data)
 	{
+        $config = new RateLimiterConfig(self::LIMITER_NAME, self::LIMITER_LIMIT, 60);
+        $rate_limiter = new RateLimiter($config);
+        if ( ! $rate_limiter->checkPassed() ) {
+            http_response_code(403);
+            die(json_encode(['error' => 'LIMIT EXCEEDED']));
+        }
+
 		$db = JFactory::getDbo();
 		$columns = array(
 			'id',
diff --git a/lib/Cleantalk/Custom/RateLimiter/RateLimiter.php b/lib/Cleantalk/Custom/RateLimiter/RateLimiter.php
new file mode 100644
index 0000000..be04476
--- /dev/null
+++ b/lib/Cleantalk/Custom/RateLimiter/RateLimiter.php
@@ -0,0 +1,151 @@
+<?php
+
+namespace Cleantalk\Custom\RateLimiter;
+
+use Cleantalk\Common\Mloader\Mloader;
+use Cleantalk\Common\RateLimiter\RateLimiterConfig;
+use Cleantalk\Common\RateLimiter\RateLimiterDto;
+use Cleantalk\Common\Variables\Server;
+
+class RateLimiter extends \Cleantalk\Common\RateLimiter\RateLimiter
+{
+    /**
+     * @var string
+     */
+    private $table_name;
+    /**
+     * @var \Cleantalk\Common\Db\Db
+     */
+    private $db_object;
+
+    public function __construct(RateLimiterConfig $config)
+    {
+        parent::__construct($config);
+        /** @var \Cleantalk\Common\Db\Db $db_class */
+        $db_class = Mloader::get('Db');
+        $this->db_object = $db_class::getInstance();
+        $this->table_name = $this->db_object->prefix . APBCT_RATE_LIMITS;
+    }
+
+
+    /**
+     * @inheritDoc
+     */
+    protected function setIP(): void
+    {
+        /** @var \Cleantalk\Common\Helper\Helper $helper_class */
+        $helper_class = Mloader::get('Helper');
+        $this->ip = $helper_class::ipGet();
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function setUA(): void
+    {
+        $this->ua = (string) Server::get('HTTP_USER_AGENT', 'default_ua');
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function handleErrors(string $msg): void
+    {
+        error_log('CleanTalk RateLimiter error: ' . $msg);
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function increment(RateLimiterDto $uid_data): bool
+    {
+        $is_expired = ($this->current_ts - $uid_data->created_at) > $this->config->period;
+
+        $uid_data->counter = $is_expired ? 1 : $uid_data->counter + 1;
+        $uid_data->created_at = $is_expired ? $this->current_ts : $uid_data->created_at;
+        $uid_data->last_call = $this->current_ts;
+
+        $this->db_object->prepare(
+            '
+            UPDATE ' . $this->table_name . ' SET
+                counter = %s,
+                last_call = %s,
+                created_at = %s
+            WHERE uid = %s
+        ', [
+            $uid_data->counter,
+            $uid_data->last_call,
+            $uid_data->created_at,
+            $uid_data->uid
+        ]);
+
+	    $result = $this->db_object->execute($this->db_object->getQuery());
+
+        return false !== $result;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function insert(RateLimiterDto $uid_data): bool
+    {
+        $this->db_object->prepare(
+            '
+            INSERT INTO ' . $this->table_name . '
+                (uid, type, ip, ua, counter, last_call, created_at)
+            VALUES (%s, %s, %s, %s, 1, %s, %s)
+            ON DUPLICATE KEY UPDATE last_call = %s, counter = counter + 1;
+            ',[
+            $uid_data->uid,
+            $uid_data->type,
+            $uid_data->ip,
+            $uid_data->ua,
+	        $uid_data->last_call,
+	        $uid_data->created_at,
+            $uid_data->last_call
+        ]);
+
+        $result = $this->db_object->execute($this->db_object->getQuery());
+
+        return false !== $result;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function cleanUp(): bool
+    {
+        $threshold = $this->current_ts - ($this->config->period + 10);
+
+        $this->db_object->prepare(
+            'DELETE FROM ' . $this->table_name . ' WHERE created_at < %s AND type = %s;',
+            [
+                $threshold,
+                $this->config->type
+            ]
+        );
+
+        $result = $this->db_object->execute($this->db_object->getQuery());
+
+        return false !== $result;
+    }
+
+	/**
+	 * Retrieves rate limit data for the current UID from database
+	 *
+	 * @return RateLimiterDTO|false Rate limit data object or false if not found
+	 */
+	public function selectUIDData()
+	{
+		$this->db_object->prepare(
+			'
+                SELECT uid, type, ip, ua, counter, last_call, created_at FROM ' . $this->table_name . '
+                WHERE uid = %s LIMIT 1;
+            ',
+			[$this->uid]
+		);
+		$result = $this->db_object->fetch($this->db_object->getQuery());
+
+		return !empty($result) ? new RateLimiterDTO($result) : false;
+	}
+}
diff --git a/plugin-updates.xml b/plugin-updates.xml
index c68c30e..2a96e61 100644
--- a/plugin-updates.xml
+++ b/plugin-updates.xml
@@ -6,15 +6,15 @@
         <element>cleantalkantispam</element>
         <type>plugin</type>
         <folder>system</folder>
-        <version>3.2.6</version>
+        <version>3.3.0</version>
         <downloads>
-            <downloadurl type="full" format="zip">https://github.com/CleanTalk/joomla3.x-4.x-antispam/archive/3.2.6.zip</downloadurl>
+            <downloadurl type="full" format="zip">https://github.com/CleanTalk/joomla3.x-4.x-antispam/archive/refs/heads/Upd-Alt-cookie-rate-limit-VI.zip</downloadurl>
         </downloads>
         <tags>
             <tag>stable</tag>
         </tags>
         <section>Updates</section>
-        <targetplatform name="joomla" version="3.[1234567890]|5.[1234567890]"/>
+        <targetplatform name="joomla" version="3.[1234567890]|4.[1234567890]|5.[1234567890]|6.[1234567890]"/>
         <client>site</client>
     </update>
 </updates>
diff --git a/sql/mariadb/install.mariadb.utf8.sql b/sql/mariadb/install.mariadb.utf8.sql
index 0865ba0..ba1b969 100644
--- a/sql/mariadb/install.mariadb.utf8.sql
+++ b/sql/mariadb/install.mariadb.utf8.sql
@@ -49,3 +49,13 @@ CREATE TABLE IF NOT EXISTS `#__cleantalk_custom_storage` (
     `value` MEDIUMTEXT NULL DEFAULT NULL,
     PRIMARY KEY (`name`)
 );
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/mariadb/uninstall.mariadb.utf8.sql b/sql/mariadb/uninstall.mariadb.utf8.sql
index 449f811..340b8cd 100644
--- a/sql/mariadb/uninstall.mariadb.utf8.sql
+++ b/sql/mariadb/uninstall.mariadb.utf8.sql
@@ -4,3 +4,4 @@ DROP TABLE IF EXISTS `#__cleantalk_sessions`;
 DROP TABLE IF EXISTS `#__cleantalk_ua_bl`;
 DROP TABLE IF EXISTS `#__cleantalk_usermeta`;
 DROP TABLE IF EXISTS `#__cleantalk_custom_storage`;
+DROP TABLE IF EXISTS `#__cleantalk_rate_limits`;
diff --git a/sql/mariadb/updates/3.3.0.sql b/sql/mariadb/updates/3.3.0.sql
new file mode 100644
index 0000000..118877d
--- /dev/null
+++ b/sql/mariadb/updates/3.3.0.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
+    `id` int(11) NOT NULL AUTO_INCREMENT,
+    `user_id` int(11) NOT NULL,
+    `meta_key` varchar(255) DEFAULT NULL,
+    `meta_value` longtext DEFAULT NULL,
+    PRIMARY KEY (`id`)
+);
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/mariadb/updates/3.3.sql b/sql/mariadb/updates/3.3.sql
deleted file mode 100644
index 13bdd1a..0000000
--- a/sql/mariadb/updates/3.3.sql
+++ /dev/null
@@ -1,7 +0,0 @@
-CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
-    `id` int(11) NOT NULL AUTO_INCREMENT,
-    `user_id` int(11) NOT NULL,
-    `meta_key` varchar(255) DEFAULT NULL,
-    `meta_value` longtext DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
\ No newline at end of file
diff --git a/sql/mysql/install.mysql.utf8.sql b/sql/mysql/install.mysql.utf8.sql
index 0327b48..e91d7d4 100644
--- a/sql/mysql/install.mysql.utf8.sql
+++ b/sql/mysql/install.mysql.utf8.sql
@@ -49,3 +49,13 @@ CREATE TABLE IF NOT EXISTS `#__cleantalk_custom_storage` (
     `value` MEDIUMTEXT NULL DEFAULT NULL,
     PRIMARY KEY (`name`)
 );
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/mysql/uninstall.mysql.utf8.sql b/sql/mysql/uninstall.mysql.utf8.sql
index 449f811..340b8cd 100644
--- a/sql/mysql/uninstall.mysql.utf8.sql
+++ b/sql/mysql/uninstall.mysql.utf8.sql
@@ -4,3 +4,4 @@ DROP TABLE IF EXISTS `#__cleantalk_sessions`;
 DROP TABLE IF EXISTS `#__cleantalk_ua_bl`;
 DROP TABLE IF EXISTS `#__cleantalk_usermeta`;
 DROP TABLE IF EXISTS `#__cleantalk_custom_storage`;
+DROP TABLE IF EXISTS `#__cleantalk_rate_limits`;
diff --git a/sql/mysql/updates/3.3.0.sql b/sql/mysql/updates/3.3.0.sql
new file mode 100644
index 0000000..118877d
--- /dev/null
+++ b/sql/mysql/updates/3.3.0.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
+    `id` int(11) NOT NULL AUTO_INCREMENT,
+    `user_id` int(11) NOT NULL,
+    `meta_key` varchar(255) DEFAULT NULL,
+    `meta_value` longtext DEFAULT NULL,
+    PRIMARY KEY (`id`)
+);
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/mysql/updates/3.3.sql b/sql/mysql/updates/3.3.sql
deleted file mode 100644
index 13bdd1a..0000000
--- a/sql/mysql/updates/3.3.sql
+++ /dev/null
@@ -1,7 +0,0 @@
-CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
-    `id` int(11) NOT NULL AUTO_INCREMENT,
-    `user_id` int(11) NOT NULL,
-    `meta_key` varchar(255) DEFAULT NULL,
-    `meta_value` longtext DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
\ No newline at end of file
diff --git a/sql/sqlsrv/install.mysql.utf8.sql b/sql/sqlsrv/install.mysql.utf8.sql
deleted file mode 100644
index 0865ba0..0000000
--- a/sql/sqlsrv/install.mysql.utf8.sql
+++ /dev/null
@@ -1,51 +0,0 @@
-CREATE TABLE IF NOT EXISTS `#__cleantalk_sfw` (
-    `id` INT(11) NOT NULL AUTO_INCREMENT,
-    `network` int(11) unsigned NOT NULL,
-    `mask` int(11) unsigned NOT NULL,
-    `status` tinyint(1) NOT NULL DEFAULT 0,
-    `source` tinyint(1) NOT NULL DEFAULT 0,
-    PRIMARY KEY (`id`),
-    INDEX (  `network` ,  `mask` )
-);
-CREATE TABLE IF NOT EXISTS `#__cleantalk_sfw_logs` (
-    `id` VARCHAR(40) NOT NULL,
-    `ip` VARCHAR(15) NOT NULL,
-    `status` ENUM('PASS_SFW','DENY_SFW','PASS_SFW__BY_WHITELIST','PASS_SFW__BY_COOKIE','DENY_ANTICRAWLER','PASS_ANTICRAWLER','DENY_ANTICRAWLER_UA','PASS_ANTICRAWLER_UA','DENY_ANTIFLOOD','PASS_ANTIFLOOD') NULL DEFAULT NULL,
-    `all_entries` INT NOT NULL,
-    `blocked_entries` INT NOT NULL,
-    `entries_timestamp` INT NOT NULL,
-    `ua_id` INT(11) NULL DEFAULT NULL,
-    `ua_name` VARCHAR(1024) NOT NULL,
-    `source` TINYINT NULL DEFAULT NULL,
-    `network` VARCHAR(20) NULL DEFAULT NULL,
-    `first_url`VARCHAR(100) NULL DEFAULT NULL,
-    `last_url` VARCHAR(100) NULL DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
-CREATE TABLE IF NOT EXISTS `#__cleantalk_sessions` (
-  `id` varchar(64) NOT NULL,
-  `name` varchar(40) NOT NULL,
-  `value` text NULL DEFAULT NULL,
-  `last_update` datetime NULL DEFAULT NULL,
-  PRIMARY KEY (`name`(40), `id`(64))
-);
-CREATE TABLE IF NOT EXISTS `#__cleantalk_ua_bl` (
-    `id` int(11) NOT NULL,
-    `ua_template` varchar(255) DEFAULT NULL,
-    `ua_status` tinyint(4) DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
-UPDATE `#__extensions` SET params = '{"ct_check_register":1,"ct_check_contact_forms":1,"check_search":1,"ct_jcomments_check_comments":1,"roles_exclusions":"administrator,super users","ct_set_cookies":1}'
-WHERE element = 'cleantalkantispam' AND folder = 'system';
-CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
-    `id` int(11) NOT NULL AUTO_INCREMENT,
-    `user_id` int(11) NOT NULL,
-    `meta_key` varchar(255) DEFAULT NULL,
-    `meta_value` longtext DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
-CREATE TABLE IF NOT EXISTS `#__cleantalk_custom_storage` (
-    `name` VARCHAR(100) NOT NULL DEFAULT '',
-    `value` MEDIUMTEXT NULL DEFAULT NULL,
-    PRIMARY KEY (`name`)
-);
diff --git a/sql/sqlsrv/install.sqlsrv.utf8.sql b/sql/sqlsrv/install.sqlsrv.utf8.sql
index 0865ba0..ba1b969 100644
--- a/sql/sqlsrv/install.sqlsrv.utf8.sql
+++ b/sql/sqlsrv/install.sqlsrv.utf8.sql
@@ -49,3 +49,13 @@ CREATE TABLE IF NOT EXISTS `#__cleantalk_custom_storage` (
     `value` MEDIUMTEXT NULL DEFAULT NULL,
     PRIMARY KEY (`name`)
 );
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/sqlsrv/uninstall.mysql.utf8.sql b/sql/sqlsrv/uninstall.mysql.utf8.sql
deleted file mode 100644
index 449f811..0000000
--- a/sql/sqlsrv/uninstall.mysql.utf8.sql
+++ /dev/null
@@ -1,6 +0,0 @@
-DROP TABLE IF EXISTS `#__cleantalk_sfw`;
-DROP TABLE IF EXISTS `#__cleantalk_sfw_logs`;
-DROP TABLE IF EXISTS `#__cleantalk_sessions`;
-DROP TABLE IF EXISTS `#__cleantalk_ua_bl`;
-DROP TABLE IF EXISTS `#__cleantalk_usermeta`;
-DROP TABLE IF EXISTS `#__cleantalk_custom_storage`;
diff --git a/sql/sqlsrv/uninstall.sqlsrv.utf8.sql b/sql/sqlsrv/uninstall.sqlsrv.utf8.sql
index 449f811..340b8cd 100644
--- a/sql/sqlsrv/uninstall.sqlsrv.utf8.sql
+++ b/sql/sqlsrv/uninstall.sqlsrv.utf8.sql
@@ -4,3 +4,4 @@ DROP TABLE IF EXISTS `#__cleantalk_sessions`;
 DROP TABLE IF EXISTS `#__cleantalk_ua_bl`;
 DROP TABLE IF EXISTS `#__cleantalk_usermeta`;
 DROP TABLE IF EXISTS `#__cleantalk_custom_storage`;
+DROP TABLE IF EXISTS `#__cleantalk_rate_limits`;
diff --git a/sql/sqlsrv/updates/3.3.0.sql b/sql/sqlsrv/updates/3.3.0.sql
new file mode 100644
index 0000000..118877d
--- /dev/null
+++ b/sql/sqlsrv/updates/3.3.0.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
+    `id` int(11) NOT NULL AUTO_INCREMENT,
+    `user_id` int(11) NOT NULL,
+    `meta_key` varchar(255) DEFAULT NULL,
+    `meta_value` longtext DEFAULT NULL,
+    PRIMARY KEY (`id`)
+);
+CREATE TABLE IF NOT EXISTS `#__cleantalk_rate_limits` (
+    uid VARCHAR(32) NOT NULL,
+    type VARCHAR(32) NOT NULL,
+    ip VARCHAR(45) NOT NULL,
+    ua VARCHAR(200) NOT NULL,
+    counter INT NOT NULL DEFAULT 1,
+    last_call INT NOT NULL,
+    created_at INT NOT NULL,
+    PRIMARY KEY (uid)
+);
diff --git a/sql/sqlsrv/updates/3.3.sql b/sql/sqlsrv/updates/3.3.sql
deleted file mode 100644
index 13bdd1a..0000000
--- a/sql/sqlsrv/updates/3.3.sql
+++ /dev/null
@@ -1,7 +0,0 @@
-CREATE TABLE IF NOT EXISTS `#__cleantalk_usermeta` (
-    `id` int(11) NOT NULL AUTO_INCREMENT,
-    `user_id` int(11) NOT NULL,
-    `meta_key` varchar(255) DEFAULT NULL,
-    `meta_value` longtext DEFAULT NULL,
-    PRIMARY KEY (`id`)
-);
\ No newline at end of file