26.-+Data+Security

=Data Security=   Data security means ensuring that datais kept safe from corruption and that access to it is suitably controlled.Thus data security helps to ensure privacy. It also helps in protecting personal data.

   ** Data Security Technologies ** This security mechanism uses mathematical schemes and algorithms to scramble data into unreadable text. It can only by decoded or decrypted by the party that possesses the associated key. (FDE) Full-disk encryption offers some of the best protection available. This technology enables you to encrypt every piece of data on a disk or hard disk drive. Full disk encryption is even more powerful when hardware solutions are used in conjunction with software components. This combination is often referred to as end-based or end-point full disk encryption.
 * **Disk Encription**

 Backups are used to ensure data which is lost can be recovered.   Data Masking of structured data is the process of obscuring (masking) specific data within a database table or cell to ensure that data security is maintained and sensitive information is not exposed to unauthorized personnel. This may include masking the data from users (for example so banking customer representatives can only see the last 4 digits of a customers national identity number), developers (who need real production data to test new software releases but should not be able to see sensitive financial data), outsourcing vendors, etc.
 * **Backups**
 * **Data Masking**

 Data erasure is a method of software-based overwriting that completely destroys all electronic data residing on a hard drive or other digital media to ensure that no sensitive data is leaked when an asset is retired or reused. 
 * **Data erasure**