diff --git a/common/framework/session.php b/common/framework/session.php
index 44a36d1e7..0b93e299f 100644
--- a/common/framework/session.php
+++ b/common/framework/session.php
@@ -126,7 +126,7 @@ class Session
 				// Hacked session! Destroy everything.
 				$_SESSION = array();
 				$must_create = true;
-				self::setAutologinKeys(null, null);
+				self::destroyAutologinKeys();
 			}
 		}
 		else
@@ -154,7 +154,7 @@ class Session
 				// Hacked session! Destroy everything.
 				$_SESSION = array();
 				$must_create = true;
-				self::setAutologinKeys(null, null);
+				self::destroyAutologinKeys();
 			}
 		}
 		
@@ -353,11 +353,12 @@ class Session
 			if ($member_srl)
 			{
 				$_SESSION['RHYMIX']['login'] = $_SESSION['member_srl'] = intval($member_srl);
+				$_SESSION['RHYMIX']['last_login'] = time();
 				$_SESSION['is_logged'] = true;
 			}
 			else
 			{
-				self::setAutologinKeys(null, null);
+				self::destroyAutologinKeys();
 			}
 		}
 		
@@ -440,7 +441,7 @@ class Session
 		self::$_started = false;
 		self::$_member_info = false;
 		self::_setKeys();
-		self::setAutologinKeys(null, null);
+		self::destroyAutologinKeys();
 		@session_destroy();
 		return true;
 	}
@@ -851,7 +852,7 @@ class Session
 	 * @param string $security_key
 	 * @return bool
 	 */
-	public static function setAutologinKeys($autologin_key = null, $security_key = null)
+	public static function setAutologinKeys($autologin_key, $security_key)
 	{
 		// Get session parameters.
 		list($lifetime, $refresh_interval, $domain, $path) = self::_getParams();
@@ -862,18 +863,59 @@ class Session
 		{
 			setcookie('rx_autologin', $autologin_key . $security_key, $lifetime, $path, $domain, false, true);
 			$_COOKIE['rx_autologin'] = $autologin_key . $security_key;
+			return true;
 		}
 		else
 		{
-			if (self::$_autologin_key)
-			{
-				executeQuery('member.deleteAutologin', (object)array('autologin_key' => substr(self::$_autologin_key, 0, 24)));
-				self::$_autologin_key = false;
-			}
-			setcookie('rx_autologin', 'deleted', time() - 86400, $path, $domain, false, true);
-			unset($_COOKIE['rx_autologin']);
+			return false;
+		}
+	}
+	
+	/**
+	 * Destroy autologin keys.
+	 * 
+	 * @return bool
+	 */
+	public static function destroyAutologinKeys()
+	{
+		if (self::$_autologin_key)
+		{
+			executeQuery('member.deleteAutologin', (object)array('autologin_key' => substr(self::$_autologin_key, 0, 24)));
+			self::$_autologin_key = false;
+			$result = true;
+		}
+		else
+		{
+			$result = false;
 		}
 		
+		setcookie('rx_autologin', 'deleted', time() - 86400, $path, $domain, false, true);
+		unset($_COOKIE['rx_autologin']);
+		return $result;
+	}
+	
+	/**
+	 * Destroy all other autologin keys (except the current session).
+	 * 
+	 * @param int $member_srl
+	 * @return bool
+	 */
+	public static function destroyOtherAutologinKeys($member_srl)
+	{
+		$member_srl = intval($member_srl);
+		if (!$member_srl)
+		{
+			return false;
+		}
+		
+		if (self::$_autologin_key)
+		{
+			executeQuery('member.deleteAutologin', (object)array('member_srl' => $member_srl, 'not_autologin_key' => substr(self::$_autologin_key, 0, 24)));
+		}
+		else
+		{
+			executeQuery('member.deleteAutologin', (object)array('member_srl' => $member_srl));
+		}
 		return true;
 	}
 }
diff --git a/modules/member/lang/en.php b/modules/member/lang/en.php
index 800144cf2..a13cd0041 100644
--- a/modules/member/lang/en.php
+++ b/modules/member/lang/en.php
@@ -161,6 +161,7 @@ $lang->cmd_config_password_strength = 'password strength';
 $lang->cmd_password_hashing_algorithm = 'Password Hashing Algorithm';
 $lang->cmd_password_hashing_work_factor = 'Password Hashing Work Factor';
 $lang->cmd_password_hashing_auto_upgrade = 'Auto-upgrade Hashing Algorithm';
+$lang->cmd_password_change_invalidate_other_sessions = 'Log out other devices on password change';
 $lang->password_strength_low = 'low';
 $lang->password_strength_normal = 'normal';
 $lang->password_strength_high = 'high';
@@ -168,6 +169,7 @@ $lang->about_password_strength_config = 'When members register or change the pas
 $lang->about_password_hashing_algorithm = 'You can choose how to encrypt (hash) members\' passwords stored in the database.';
 $lang->about_password_hashing_work_factor = 'Higher work factors are more secure, but logins may take a long time. This only applies to bcrypt and pbkdf2.';
 $lang->about_password_hashing_auto_upgrade = 'Passwords encrypted using different algorithms will be automatically converted to the configured algorithm at next login.';
+$lang->about_password_change_invalidate_other_sessions = 'Log out all other devices (browsers) when a member changes the password.';
 $lang->about_password_strength['low'] = 'the password must be at least 4';
 $lang->about_password_strength['normal'] = 'the password must be at least 6, and must have at least one alpha character and numeric characters';
 $lang->about_password_strength['high'] = 'the password must be at least 8, and must have at least one alpha character, numeric character and special character ';
diff --git a/modules/member/lang/ko.php b/modules/member/lang/ko.php
index f20d1752f..a7b604339 100644
--- a/modules/member/lang/ko.php
+++ b/modules/member/lang/ko.php
@@ -170,6 +170,7 @@ $lang->cmd_config_password_strength = '비밀번호 보안수준';
 $lang->cmd_password_hashing_algorithm = '비밀번호 암호화 알고리듬';
 $lang->cmd_password_hashing_work_factor = '비밀번호 암호화 소요시간';
 $lang->cmd_password_hashing_auto_upgrade = '알고리듬 자동 업그레이드';
+$lang->cmd_password_change_invalidate_other_sessions = '비번 변경시 다른 기기 로그아웃';
 $lang->password_strength_low = '낮음';
 $lang->password_strength_normal = '보통';
 $lang->password_strength_high = '높음';
@@ -177,6 +178,7 @@ $lang->about_password_strength_config = '회원들이 비밀번호를 등록/변
 $lang->about_password_hashing_algorithm = '회원들의 비밀번호를 DB에 저장할 때 암호화(해싱)하는 방식을 지정할 수 있습니다.';
 $lang->about_password_hashing_work_factor = '시간이 오래 걸리는 알고리듬일수록 보안이 강하지만, 로그인이 오래 걸릴 수 있습니다. bcrypt 및 pbkdf2 알고리듬에만 적용됩니다.';
 $lang->about_password_hashing_auto_upgrade = '설정된 알고리듬과 다른 방법으로 암호화된 비밀번호가 있으면 다음 로그인시 설정된 알고리듬으로 자동 변환합니다.';
+$lang->about_password_change_invalidate_other_sessions = '비밀번호를 변경하면 현재 기기(브라우저)를 제외한 모든 로그인이 풀리도록 합니다.';
 $lang->about_password_strength['low'] = '비밀번호는 4자 이상이어야 합니다.';
 $lang->about_password_strength['normal'] = '비밀번호는 6자리 이상이어야 하며 영문과 숫자를 반드시 포함해야 합니다.';
 $lang->about_password_strength['high'] = '비밀번호는 8자리 이상이어야 하며 영문과 숫자, 특수문자를 반드시 포함해야 합니다.';
diff --git a/modules/member/member.admin.controller.php b/modules/member/member.admin.controller.php
index 70ff7e575..e34edaa74 100644
--- a/modules/member/member.admin.controller.php
+++ b/modules/member/member.admin.controller.php
@@ -171,6 +171,7 @@ class memberAdminController extends member
 			'password_hashing_algorithm',
 			'password_hashing_work_factor',
 			'password_hashing_auto_upgrade',
+			'password_change_invalidate_other_sessions',
 			'update_nickname_log',
 			'member_allow_fileupload'
 		);
diff --git a/modules/member/member.controller.php b/modules/member/member.controller.php
index 1ec17d081..d375844b1 100644
--- a/modules/member/member.controller.php
+++ b/modules/member/member.controller.php
@@ -735,6 +735,21 @@ class memberController extends member
 		$args->password = $password;
 		$output = $this->updateMemberPassword($args);
 		if(!$output->toBool()) return $output;
+		
+		// Log out all other sessions.
+		$oModuleModel = getModel('module');
+		$member_config = $oModuleModel->getModuleConfig('member');
+		if ($member_config->password_change_invalidate_other_sessions === 'Y')
+		{
+			$invalid_before = time();
+			$filename = RX_BASEDIR . sprintf('files/member_extra_info/invalid_before/%s%d.txt', getNumberingPath($member_srl), $member_srl);
+			Rhymix\Framework\Storage::write($filename, $invalid_before);
+			Rhymix\Framework\Session::destroyOtherAutologinKeys($member_srl);
+			if ($_SESSION['RHYMIX'] && $_SESSION['RHYMIX']['last_login'])
+			{
+				$_SESSION['RHYMIX']['last_login'] = $invalid_before;
+			}
+		}
 
 		$this->add('member_srl', $args->member_srl);
 		$this->setMessage('success_updated');
@@ -771,6 +786,7 @@ class memberController extends member
 		$output = $this->deleteMember($member_srl);
 		if(!$output->toBool()) return $output;
 		// Destroy all session information
+		executeQuery('member.deleteAutologin', (object)array('member_srl' => $member_srl));
 		Rhymix\Framework\Session::logout();
 		// Return success message
 		$this->setMessage('success_leaved');
@@ -1922,6 +1938,21 @@ class memberController extends member
 			$this->destroySessionInfo();
 			return;
 		}
+		
+		// Invalidate the session if the member's password has changed
+		$oModuleModel = getModel('module');
+		$member_config = $oModuleModel->getModuleConfig('member');
+		if ($member_config->password_change_invalidate_other_sessions === 'Y')
+		{
+			$filename = RX_BASEDIR . sprintf('files/member_extra_info/invalid_before/%s%d.txt', getNumberingPath($member_srl), $member_srl);
+			$invalid_before = Rhymix\Framework\Storage::read($filename);
+			if ($invalid_before && $_SESSION['RHYMIX'] && $_SESSION['RHYMIX']['last_login'] && $_SESSION['RHYMIX']['last_login'] < $invalid_before)
+			{
+				$this->destroySessionInfo();
+				return;
+			}
+		}
+		
 		// Log in for treatment sessions set
 		/*
 		$_SESSION['is_logged'] = true;
diff --git a/modules/member/queries/deleteAutologin.xml b/modules/member/queries/deleteAutologin.xml
index ac8ae821b..41aabfeec 100644
--- a/modules/member/queries/deleteAutologin.xml
+++ b/modules/member/queries/deleteAutologin.xml
@@ -4,6 +4,7 @@
     </tables>
     <conditions>
         <condition operation="equal" column="autologin_key" var="autologin_key" />
+		<condition operation="notequal" column="autologin_key" var="not_autologin_key" pipe="and" />
         <condition operation="equal" column="member_srl" var="member_srl" pipe="and" />
     </conditions>
 </query>
diff --git a/modules/member/tpl/default_config.html b/modules/member/tpl/default_config.html
index f1f95be0a..a796c748e 100644
--- a/modules/member/tpl/default_config.html
+++ b/modules/member/tpl/default_config.html
@@ -71,6 +71,14 @@
 			<p class="x_help-block">{$lang->about_password_hashing_auto_upgrade}</p>
 		</div>
 	</div>
+	<div class="x_control-group">
+		<label class="x_control-label">{$lang->cmd_password_change_invalidate_other_sessions}</label>
+		<div class="x_controls">
+			<label for="password_change_invalidate_other_sessions_y" class="x_inline"><input type="radio" name="password_change_invalidate_other_sessions" id="password_change_invalidate_other_sessions_y" value="Y" checked="checked"|cond="$config->password_change_invalidate_other_sessions == 'Y'" /> {$lang->cmd_yes}</label>
+			<label for="password_change_invalidate_other_sessions_n" class="x_inline"><input type="radio" name="password_change_invalidate_other_sessions" id="password_change_invalidate_other_sessions_n" value="N" checked="checked"|cond="$config->password_change_invalidate_other_sessions != 'Y'" /> {$lang->cmd_no}</label>
+			<p class="x_help-block">{$lang->about_password_change_invalidate_other_sessions}</p>
+		</div>
+	</div>
 	<div class="x_control-group">
 		<label class="x_control-label" for="webmaster_name">{$lang->webmaster_name}</label>
 		<div class="x_controls">