This plugin is for administrators who want to be notified when updates are available.
Many security problems are consequences of no update. With Zaun, admin are notified !
More information about Ze’s Admin Update Notification
The plugin WP Security Scan cause bad detection for WordPress upgrade…
To made WordPress upgrade notification working you must comment out this line in wp-content/plugins/wp-security-scan/securityscan.php :
add_action("init", mrt_remove_wp_version,1);