How to fix Session Hijacking issue in ci3

Hi

If I PHPSESSID value and past in a different browser. I am able to log in without a username and password. please check my configuration as well and let me know how I can fix it.

$config['sess_driver'] = 'database';
$config['sess_save_path'] = 'ci_sessions';
$config['sess_use_database']    = TRUE;

$config['sess_cookie_name'] = 'ci_sessions';
$config['sess_expiration'] = 2700;
$config['sess_match_ip'] = TRUE;
$config['sess_time_to_update'] = 1;
$config['sess_regenerate_destroy'] = TRUE;
$config['sess_expire_on_close'] = TRUE;
$config['sess_encrypt_cookie'] = TRUE;
$config['sess_match_useragent'] = TRUE;

And sess_match_useragent is not getting stored in DB.
Ref https://codeigniter.com/userguide3/libra...ase-driver
I have used this
CREATE TABLE IF NOT EXISTS `ci_sessions` (
        `id` varchar(128) NOT NULL,
        `ip_address` varchar(45) NOT NULL,
        `timestamp` int(10) unsigned DEFAULT 0 NOT NULL,
        `data` blob NOT NULL,
        KEY `ci_sessions_timestamp` (`timestamp`)
);

There is no such config: sess_match_useragent

What is the exact issue?

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper