5.5 digital security

Question 1

what is digital security

Answer 1

works on the computer system
e.g. usernames and passwords
e.g. file permissions

Question 2

what does antivirus do

Answer 2

scans devices to look for viruses and removes any it finds

needs to be frequently updated so the latest viruses are included in the database

Question 3

what does antispyware do

Answer 3

scans devices to look for spyware and removes any it finds

Question 4

what is encryption

Answer 4

data is made unreadable to unauthorise viewers
only those with the key can decrypt - this limits the impact of interception

Question 5

what does a firewall do

Answer 5

monitors networks and filter messages based as rules
can be hardware or software