What is data security?
Data security protects data against loss/corruption and ensures recovery of data
What is data privacy?
Data privacy ensures data is protected against unauthorised access
What is data integrity and give example
Data integrity ensures accuracy of data and whether it is up to date. EG Validation/verification rules
Why does data need to be kept secure
Data needs to be kept secure to protect against someone deleting or modifying or stealing it
Why does the computer system need to be kept secure?
Computer system needs to be kept secure to protect against someone installing malware or damaging the system data on it.
What are 3 different measures used to protect computer systems to prevent unauthorised access
Two factor authentication
Strong username and password and biometric passwords
How does digital signatures work?
Firstly the user puts message through hashing algorithm which produces a digest.
What is a digest/Hash?
A digest is a unique fingerprint of the original message afer it is hashed.
