The development of mobile applications is unbalanced with the level of its security which is vulnerable to hacker attacks. Some important things that need to be considered in the security of mobile applications are login and database system. A login system that used the database as user authentication and passwords are very vulnerable to be hacking. https://www.roneverhart.com/Jumbo-New-Spin-Tuz-Karabiber-De-irmeni-14-cm/