1.4.2 Security

SHOW UNDERSTANDING OF HOW DATA ARE KEPT SAFE WHEN STORED AND TRANSMITTED, INCLUDING:
– USE OF PASSWORDS, BOTH ENTERED AT A KEYBOARD AND BIOMETRIC
PASSWORDS (LONGER PASSWORDS ARE BETTER) AND BIOMETRICS SUCH AS FINGERPRINT, RETINA SCANNERS ETC. 

– USE OF FIREWALLS, BOTH SOFTWARE AND HARDWARE, INCLUDING PROXY SERVERS
FIREWALLS MONITOR NETWORK TRAFFIC. PROXY SERVERS REDIRECT CERTAIN TRAFFIC AND ENCRYPT THEM TO PROTECT DATA. 


– USE OF SECURITY PROTOCOLS SUCH AS SECURE SOCKET LAYER (SSL) AND TRANSPORT LAYER SECURITY (TLS)
TLS IS A MORE SECURE PROTOCOL COMPARED TO SSL, TLS IS A MORE ADVANCED VERSION OF SSL, ALLOWING FOR BETTER SECURITY. TLS IS LESS VULNERABLE TO ATTACKS. 

– USE OF SYMMETRIC ENCRYPTION (PLAIN TEXT, CYPHER TEXT AND USE OF A KEY) SHOWING UNDERSTANDING THAT INCREASING THE LENGTH OF A KEY INCREASES THE STRENGTH OF THE ENCRYPTION
SYMMETRIC ENCRYPTION IS WHEN PLAINTEXT IS ENCRYPTED USING AN ALGORITHM (A KEY) AND MADE INTO CIPHER TEXT, AND THE DATA THAT IS ENCRYPTED IS ALSO DECRYPTED WITH THE SAME KEY. INCREASING KEY LENGTH INCREASES STRENGTH OF ENCRYPTION BY ABOUT 2 TIMES, AS IT DOUBLES THE NUMBER OF POSSIBILITIES.