Information technology is the use of computers to store, retrieve, transmit, and manipulate data or information. IT is typically used within the context of business operations as opposed to personal or entertainment technologies. IT is considered to be a subset of information and communications technology. This is an operating system based on the Linux kernel. It was designed primarily for touch screen mobile devices, such as smart phones and tablet computers, with variants for television, cars and wrist wear. One of the most widely used mobile OS these days is ANDROID. Android is a software bunch comprising not only operating system but also middleware and key applications. . one of the fundamental methods to put in force information security is to put in force appropriate controls at critical tiers such as: Administrative, Logical and physical. Administrative controls including written policies, procedures, requirements and guidelines form the framework for handling a commercial enterprise corporation. Logical controls use statistics and software to control the get entry to of records. a few examples of logical controls are: network firewalls, passwords, network intrusion detection structures and information encryption. Separation of community vicinity and paintings region are bodily Controls. any other essential physical manage is separation of responsibilities. via organizing defense strategies in layers, i.e. concentric tiers of protection, you'll guarantee defense-in-intensity. for example, to get entry to a sure data, you may first follow cozy get admission to at the community stage, at the host-computer level, at the utility level and ultimately attain the information destination. In doing so, you will ensure overlapping layers or safety by various the strength of the firewall for distinctive packages and therefore reduce risk.