diff -rupN libraries.orig/common.inc.php libraries/common.inc.php
--- libraries.orig/common.inc.php	2016-03-22 21:46:31.452912951 -0500
+++ libraries/common.inc.php	2016-03-22 21:40:11.699913468 -0500
@@ -728,6 +728,9 @@ if (! defined('PMA_MINIMUM_COMMON')) {
         $auth_plugin = new $fqnAuthClass($plugin_manager);
 
         if (! $auth_plugin->authCheck()) {
+            //DA logging
+            log_to_file('', "not authenticated");
+
             /* Force generating of new session on login */
             if ($token_provided) {
                 PMA_secureSession();
diff -rupN libraries.orig/logging.lib.php libraries/logging.lib.php
--- libraries.orig/logging.lib.php	2016-03-22 21:46:31.455912989 -0500
+++ libraries/logging.lib.php	2016-03-22 21:39:56.640914141 -0500
@@ -8,6 +8,64 @@
  * @package PhpMyAdmin
  */
 
+define("AUTH_LOG_DIR", "./log");
+define("AUTH_LOG_FILE", "./log/auth.log");
+
+function ensure_log_dir()
+{
+	$LOG_DIR=AUTH_LOG_DIR;
+	if (is_dir($LOG_DIR))
+		return true;
+
+	if (!mkdir($LOG_DIR, 0770))
+		return false;
+}
+
+function log_to_file($user, $status)
+{
+	if (!ensure_log_dir())
+		return false;
+
+	$LOG_FILE=AUTH_LOG_FILE;
+
+	if ($user == '')
+	{
+		$user = PMA_getenv('PHP_AUTH_USER');
+	}
+
+	if ($user == '')
+		return true;
+
+	//remove any ' characters from $user
+	$user = urlencode($user);
+
+	//check for logout
+	if ($status == 'not authenticated')
+	{
+		if (isset($_GET['old_usr']) && isset($_SERVER['PHP_AUTH_USER']))
+		{
+			if ($_GET['old_usr'] == $_SERVER['PHP_AUTH_USER'])
+			{
+				$status = 'logout';
+			}
+		}
+	}
+
+	$log_str = date('M d H:i:s').":: pma auth user='$user' status='$status' ip='".$_SERVER["REMOTE_ADDR"]."'";
+
+	$fp = fopen($LOG_FILE, 'a');
+	if ($fp === false)
+	{
+		//log to apache error log instead
+		error_log($log_str."\n");
+		return;
+	}
+
+	fwrite($fp, $log_str."\n");
+
+	fclose($fp);
+}
+
 /**
  * Logs user information to webserver logs.
  *
@@ -22,5 +80,7 @@ function PMA_logUser($user, $status = 'o
         apache_note('userID', $user);
         apache_note('userStatus', $status);
     }
+
+    log_to_file($user, $status);
 }