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Protecting Data Techniques
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Backup & Recovery
Passwords
Taking a copy of the data and storing it in a secondary location.
Three types of backup process include:
- Full Backup
- Incremental Backup
- Differential Backup
Doesn't prevent threats but allows us to recover from any threat causing data loss.
Prevents unauthorised users from gaining access to systems.
Good passwords should be:
- At least 10 characters in length
- Containing uppercase letters, lowercase letters, numbers & symbols.
Particularly important in protecting against hackers.
Access Levels
This defines what software, data and services a user can access.
Highest level access is administrator access who can do anything.
Lowest level might be only able to use certain software & access certain files.
This is particularly helpful in preventing malware.
Physical Access Controls
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Protect our physical IT systems from harm.
Example controls include:
- Access Cards
- Keypad Access Control
- Biometric Access Control
- Electronic Locks
Helps prevent theft of equipment, malware being loaded onto a system & hackers.
Protecting Data Techniques
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File Permissions
This sets who can access what files and what they can do with them.
Three main types:
- Read-Only
- Read/Write
- Full Control
Protects against all threats, particularly accidental damage and hacking.
Digital Certificates
Used to authenticate a user as the owner of a public key to allow them to use public key encryption.
Key data in a digital certificate include:
- Digital Signature
- Public Key
Helps to prevent hackers gaining access to data during transmission.
Protocols
When transmitting data over a network there are specific security protocols.
These are:
- SSL
- TLS
This is used along with digital certificates to allow us to protect our data from being access during transmission.