Computer Knowledge · General Awareness

Information Security

4,634 Questions

Information security involves protecting computer systems and data from unauthorized access, cyber threats, and damage. It is a core part of the computer knowledge section in various banking and government exams. Practicing these concepts helps in understanding digital signatures, network security, and access control effectively.

Cybersecurity threatsAccess controlCryptography basicsSecurity risk managementDatabase protection

Information Security Questions

Multiple choice

Why should Singaporeans be worried with their personal data being stolen by the cyber criminals?

  1. Hackers will demand a ransom from Singaporeans to surrender the stolen data

  2. Their personal medical data in SingHealth will be removed.

  3. Hackers can assume the online identities of ppl they stolen to wrack havoc

  4. They are now part of the 27% of adults in Singapore
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stolen personal data, such as NRIC numbers and medical records, allows cyber criminals to commit identity theft, impersonate individuals, and perform fraudulent activities.

Multiple choice

What are some ways a country may be affected by a cyber security attack?

  1. it may affect banks and cause financial losses

  2. it may compromise the military cyber system and affect external security

  3. it may target cty's infrastructure, eg power grid, affecting lives.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cyber attacks can have cascading effects on a nation, impacting financial systems, military integrity, and essential public infrastructure like power grids, which directly affects the population.

Multiple choice

What should the Singapore government be most worried about the successful attack on Singhealth?

  1. PM Lee Hsien Loong personal data is accessed.

  2. Cyber criminals can exploit vulnerabilities to attack other govt servers

  3. The criminals are from another country. It is difficult to catch them

  4. It is costly to replace the servers that was hacked by the cyber criminals.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A successful breach of a major government-linked database like SingHealth demonstrates vulnerabilities that could be leveraged to gain unauthorized access to other interconnected government servers.

Multiple choice

How were the cyber criminals successful in hacking into the SingHealth records?

  1. SingHealth HQ office was raided by cyber criminals at night

  2. A SingHealth front end workstation was infected with malware.

  3. A SingHealth employee downloaded the records and sold it at Carousell.

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The 2018 SingHealth attack involved the exploitation of a front-end workstation, which was infected with malware, allowing attackers to gain a foothold and move laterally within the network.

Multiple choice

Who were the victims of the cyber attack on SingHealth in 2018?

  1. 1.5 million patients personal data

  2. PM Lee Hsien Loong medical detail

  3. Personal data from a few ministers in Singapore

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The SingHealth attack was a massive data breach that compromised the personal data of 1.5 million patients, including the medical records of high-profile individuals like the Prime Minister.

Multiple choice

Data that has not been encrypted

  1. ciphertext

  2. algorithm

  3. plain text
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plain text refers to data that is in a readable, unencrypted format, whereas ciphertext is the result of encryption.

Multiple choice

What does encryption mean?

  1. Encryption is the most effective way in data security

  2. Its the best way to stay safe from cyberbullies

  3. its the worst way to achieve data security
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Encryption is widely recognized as a cornerstone of data security because it transforms readable data into unreadable code. While option A overstates by calling it the 'most effective' way, it captures encryption's central role in protecting data from unauthorized access.

Multiple choice

Passwords are designed to do what?

  1. It's designed for sending data over a network securely

  2. It's designed to find and stop malware from damaging a network

  3. It's designed to help prevent unauthorised users from accessing a network

  4. It's designed to regularly test the network to find and fix security issues
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Passwords serve as a primary authentication mechanism to verify identity and restrict access to authorized users only.

Multiple choice

What is a Public Key

  1. A key that no one can use

  2. Front Door Key

  3. Password

  4. A key that is published for any one to use
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In asymmetric cryptography, a public key is made available to everyone so they can encrypt messages or verify signatures, while the private key remains secret.

Multiple choice

What is symmetric key encryption?

  1. When the keys to encode and decode the message are the same.

  2. When different keys are used to encode and decode a message.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Symmetric encryption uses the same secret key for both the encryption of plaintext and the decryption of ciphertext.

Multiple choice

What is encryption?

  1. File compression

  2. Decompressing a file

  3. Sorting information A to Z

  4. Scrambling information so intended person can read
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Encryption is the process of converting information into a secret code (ciphertext) to prevent unauthorized access, ensuring only authorized parties can read it.