What does obfuscation refer to in the context of cybersecurity?

Intentionally making data unclear or difficult to understand

What precaution can users take to mitigate the risk of downgrade attacks?

Keep software up-to-date and monitor for compatibility issues

What is the primary purpose of encryption?

To prevent unauthorized access to information

What is a collision in the context of cryptographic attacks?

When the output of a hashing algorithm is the same for two unique inputs

What is a downgrade attack in the context of cryptography?

An attack that uses an older version of software to exploit vulnerabilities

What is the purpose of a cipher or key in cryptography?

To encrypt and decrypt messages

Why are collisions problematic in cryptographic hashing algorithms?

They make it difficult to ensure the integrity of the data

What does a Certificate Authority do in PKI?

Issues and vouches for digital certificates

How does blockchain ensure data integrity?

By preventing data alteration through repetitive hashing

What is the aim of a cryptographic attacker?

To decrypt ciphertext and learn the private key

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Cybersecurity - Unit 4 Review

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Questions 16

Answers

1
What does hashing commonly store for authentication purposes?
Plaintext passwords
PII data
Encrypted data
Tokenized data
2
What does obfuscation refer to in the context of cybersecurity?
Intentionally exposing sensitive data to attackers
Encrypting data to enhance security
Deleting data to prevent unauthorized access
Intentionally making data unclear or difficult to understand
3
What precaution can users take to mitigate the risk of downgrade attacks?
Keep software up-to-date and monitor for compatibility issues
Keep software versions outdated
Disable automatic updates
Avoid using software with backward compatibility
4
What is the primary purpose of encryption?
To reduce the complexity of algorithms
To prevent unauthorized access to information
To increase data storage capacity
To speed up data transmission
5
What is a collision in the context of cryptographic attacks?
When the output of a hashing algorithm is the same for two unique inputs
When two encryption keys are the same
When a plaintext message is mistakenly encrypted with the wrong key
When a cryptographic algorithm fails to produce a valid ciphertext
6
What is a downgrade attack in the context of cryptography?
An attack that downgrades the security of a cryptographic algorithm
An attack that uses an older version of software to exploit vulnerabilities
An attack that lowers the efficiency of a hashing algorithm
An attack that reduces the strength of encryption keys
7
Which encryption type uses a pair of keys, public and private?
Database encryption
Symmetric encryption
Asymmetric encryption
Volume encryption
8
What is the purpose of a cipher or key in cryptography?
To reveal plaintext
To securely exchange messages
To obscure plaintext
To encrypt and decrypt messages
9
Why are collisions problematic in cryptographic hashing algorithms?
They increase the efficiency of the hashing algorithm
They ensure that hash values are unique
They improve data integrity
They make it difficult to ensure the integrity of the data
10
What type of encryption employs a single key for both encryption and decryption?
Key exchange
Database encryption
Symmetric encryption
Asymmetric encryption
11
What does a Certificate Authority do in PKI?
Decrypts messages
Manages private keys
Encrypts messages
Issues and vouches for digital certificates
12
What does PKI stand for?
Private Key Infrastructure
Protected Key Infrastructure
Public Key Infrastructure
Personal Key Infrastructure
13
How does blockchain ensure data integrity?
By preventing data alteration through repetitive hashing
By distributing records among different systems
By making ledger entries mutable
By allowing centralized control over data
14
Which obfuscation technique involves hiding information within images, audio files, or other multimedia?
Data masking
Tokenization
Steganography
Hashing
15
What is the primary feature of the blockchain?
Centralized storage of data
Rapid data alteration
Mutable ledger entries
Public and immutable ledger
16
What is the aim of a cryptographic attacker?
To improve the efficiency of encryption algorithms
To decrypt ciphertext and learn the private key
To encrypt messages securely
To enhance data integrity

Cybersecurity - Unit 4 Review Flashcards | StudBud