Commodity monolithic systems are enormous, having lots of unprotection that leads to attacks. In this era of increasing technology, relying on mobile devices and other electronic devices increases the threat from adversaries as they have the potential to obtain physical access to many computers through breaching and security theft. It is still challenging to secure data as our operating systems are less trustworthy than we expected. When the operating system (OS) is destabilized, the application data and implementation are at the attacker's mercy. Other operating systems are less trustworthy than we imagined. Therefore when the OS is unstable, data and application implementation are vulnerable to attackers. Our protective application strategy includes a secure network platform, equipment modification, and efficiency expenditure. Existing protecting application scheme has different drawbacks, such as a vast trusted computing base, hardware refinement, and high-performance overhead. To overcome these drawbacks, we present the scheme of AppShield, which has a bare-metal hypervisor-based technique in which we safely protect the data of critical applications and their execution by application localization. Due to this, we protect only critical applications, and due to this, our operating system can run without performance loss.