Cybersecurity Flashcards

Which cryptographic concept ensures that a sender cannot later deny having sent a message?

Answer: Non-repudiation

Non-repudiation, often achieved through digital signatures, prevents a sender from falsely claiming they did not send a message.

A user receives an email claiming to be from their bank asking them to verify account details via a link. What type of attack is this?

Answer: Phishing

Phishing uses deceptive emails impersonating trusted entities to trick users into revealing sensitive information.

What is the role of a firewall in network security?

Answer: Filtering network traffic based on rules

A firewall monitors and controls incoming and outgoing network traffic according to predefined security rules.

In the context of public-key cryptography, which key should a user share publicly to receive encrypted messages?

Answer: Public key

In asymmetric encryption, the public key is shared openly so others can encrypt messages that only the holder of the private key can decrypt.

Which of the following is an example of multi-factor authentication (MFA)?

Answer: A password combined with a fingerprint scan

MFA requires two or more verification factors from different categories (something you know, have, or are), such as a password plus biometric.

What does 'least privilege' mean in cybersecurity?

Answer: Users should have no more access rights than necessary for their tasks

The principle of least privilege limits user access rights to only what is necessary, reducing potential damage from errors or breaches.

An attacker intercepts communication between two parties and secretly relays or alters messages. This is called a:

Answer: Man-in-the-middle attack

A man-in-the-middle attack involves an attacker secretly intercepting and possibly altering communications between two parties.