Security of Data

Question 1

What is a virus?

Answer 1

• a virus is a software or code that can replicate itself with the intention of corrupting or deleting files on a computer
• it can cause a computer to malfunction as it fills up the hard drive space.

Question 2

What are the possible effect of the risk of getting a virus?

Answer 2

• can cause the computer to crash
• data can be deleted on a computer
• corrupt operating system and make computer run slower

Question 3

Methods to prevent virus

Answer 3

• install anti-virus software and update regulalry
• don’t use software from unknown source
• be careful when opening email attachment

Question 4

What is Hacking?

Answer 4

• an act of gaining unauthorized access to a computer system

Question 5

Possible effect of the risk of phishing

Answer 5

• creator of email can gain personal data such as bank account or credit card numbers
• can lead to fraud or identity theft

Question 6

Possible of effect of the risk of getting hacked

Answer 6

• can lead to identity theft or the misuse of personal information
• data can be deleted or corrupted on user’s computer

Question 7

Methods to prevent hacking

Answer 7

• use of strong passwords and user ID
• use of intrusion detection software
• use of firewalls

Question 7

What is the task of Firewall?

Answer 7

~!Firewall can either be software or hardware!~

• Firewall is used to block unauthorized connection made to your computers from the internet
• examines and monitors traffic to and from a user’s computer and network/internet
• warns user when there is an attempt of trying to access external data sources
• can prevent hackers gaining access.

Question 8

What is Phishing?

Answer 8

• is when a legitimate-looking email is send to a user. As soon as the user click the link in the email attached, they are sent to a fake website which will fool the user to provide personal information

Question 9

Methods to prevent phishing

Answer 9

• user should be cautious when opening email attachment
• don’t click on executable attachment that end in .exe,.bat,.com

Question 10

What is pharming?

Answer 10

• a malicious code installed on user’s computer and will redirect user to a fake website w/o user knowledge

Question 11

Possible effect of the risk of getting pharmed

Answer 11

• creator of email or code can gain personal data such as bank account or credit card numbers
• can lead to fraud or identity theft

Question 12

Methods to prevent risk of pharming

Answer 12

• use anti-spyware software that can remove pharming code from the computer
• user should always be alert and look out for clues that they are being redirected to

Question 13

What is spyware and key-logging software?

Answer 13

• gathers data by monitoring key pressed on the keyboard, the gathered data is then sent back to the person who sent the software

Question 13

Possible effect of the risk of spyware

Answer 13

• give the sender access to all data entered keyboard on the user’s computer
• the software is able to install spyware, read cookie data and also change a user’s default browser

Question 14

Methods to remove risk of getting spyware

Answer 14

• using anti-spyware software to reduce risk
• should always be alert and check for clues that their keyboard is being monitored
• use pointing device when typing password

Question 15

What are some ways to prevent the threat?

Answer 15

• Firewall
• Encryption
• Authentication techniques
  > user ID and password
  > biometrics

Question 16

What is Authentication?

Answer 16

• used to verify the data that comes from a secure and trusted source.
• Authentication techniques :
  > User ID/Password
  > Biometric authorization (fingerprint scan, iris scan, face scan)

Question 17

What is the use of User ID and Password?

Answer 17

• ID or Identifier is a name to gain access to a computer system.
• Password is a secret series of characters that enables a user to access a file, computer, or program. The passwords help ensure no unauthorized users access the computer

Question 18

What is the use of Biometrics?

Answer 18

• it is a method where the users are authenticated using their body parts or human characteristics

Question 19

What are some examples of biometric?

Answer 19

• fingerprints
• voice recognition
• face recognition
• iris recognition
• signature recognition

Question 20

Encryption

Answer 20

• its a method where the data is scrambled into garbled code using encryption key

Question 21

What is the use of encryption?

Answer 21

• requires an encryption key to encrypt the data
• protects sensitive data from being understood by hackers
• hackers will not understand the data if they dont have the key but data still can be deleted
• only authorized user/computer w/ decryption key can unscramble the data and read it.