Securing data
- 1. SECURING DATA Data security is about achieving 2 somewhat aims. First, its an attempt to prevent any data being lost corrupted, which ensures that the system remains operational. Secondly it aims to prevent unauthorised access to the data , completely restricting unauthorised access by assigning special levels of permission to each individual. Joseph Antoun Year 12 IPT Homework
- 2. Back-Up Making a back-up or recovery is the process of storing or copying data to another permanent storage device. (CD, Magnetic Tape) Recovery of the data would be the opposite process to which data is retrieved from the stored location and placed back in the system Main reason Is preventing data loss in the event that a event does occur.
- 3. Physical Security Measures Physical Security involves the room which servers and other system critical devices are located in an obvious technique for reducing data loss and unauthorised access. Some ideas of implementation may include – Physical Locks Security Cameras Security Guards
- 4. Username + Password Passwords can be used to secure individual files, or even large storage devices. These usernames and passwords can be used for granting the level of access that an individual has on that system. Data secured by passwords is only secure whilst the password remains secret. (Aint that obvious Samuel Davis ?)
- 5. Encryption & Decryption Encryption is the process of making data unreadable by those who don’t possess the encryption key Encryption alters the data in such a way to which is unreadable to the threat. Decryption is the process of decoding encrypted data using a key.
- 6. Restricting Access using DBMS & Record locks The restriction may be implemented through the level of permissions granted through the usernames and passwords. DBMS software retrieves records rather than files. It locks the Database from edits. Pessemisitc is when they must wait for the main user to edit before they can edit themselves. Optimistic locking is much more positive. First user may edit, however another user will review and determine whether it stays or goes.