2. Existing system analysis

2.1 About the Existing system
Physical security describes measures that are designed to deny access to unauthorized personnel (including attackers or even accidental intruders) from physically accessing a building, facility, resource, or stored information; and guidance on how to design structures to resist potentially hostile acts.[1] Physical security can be as simple as a locked door or as elaborate as multiple layers of barriers, armed security guards and guardhouse placement.[2]
Modern security involves a variety of systems, such as CCTV, Access Control systems, security fences, building management, fire detectors and more. These systems are operated separately, providing security personnel with a partial and isolated perspective that is very much dependant on the capabilities of the security operator. When securing a single small-scale facility, using these separate systems may be sufficient. However, securing mid-to-large scale facilities, such as airports, or multiple facilities, such as a network of train stations – requires a unified perspective.
2.2 Drawbacks of existing system
The importance of physical security cannot be understated because it ranges from issues of outright theft of a system or key storage component to intervention with the boot drive during startup. Let's consider several common physical security threat scenarios.
Backups and Restoration Security
An organization's philosophy of network security can vary greatly. Data integrity is not commonly viewed as a security issue, but maintaining system and data backup is fundamental. Securing valuable information through regular backups is the best defense against a natural disaster, a runaway virus, or a hack job.
When implementing a backup policy, don't forget to also secure the backup media. For example, if you regularly back up critical data files and then tuck