D431 Digital Forensics in Cybersecurity - Set 2 - Part 2

Correct Answer: It allows for the collection of foreign intelligence information using physical and electronic surveillance

FISA allows for the surveillance and collection of foreign intelligence information from foreign powers and agents of foreign powers.

Correct Answer: Breaking cryptographic systems to reveal the original data

Cryptanalysis involves techniques used to break encryption and reveal the plaintext without having access to the key.

Correct Answer: The encryption key should be secret, but the algorithm can be public

Kerckhoffs' principle states that the security of a cryptographic system should depend only on the secrecy of the key, not the secrecy of the algorithm itself.

Correct Answer: A virus that hides its malicious code using encryption or compression

An armored virus uses techniques like encryption or compression to make it harder for antivirus software and researchers to analyze its code.

Correct Answer: The Fourth Amendment

The Fourth Amendment protects individuals from unreasonable searches and seizures, requiring law enforcement to obtain a warrant before accessing stored communications.

Correct Answer: Polymorphic virus

A polymorphic virus modifies its code each time it replicates, making it difficult for antivirus software to detect it through traditional signature-based methods.

Correct Answer: To protect individuals from being exposed to indecent online content

The Communications Decency Act was designed to protect people, especially minors, from accessing indecent or harmful content on the internet.

Correct Answer: To load the operating system during startup

The master boot record (MBR) contains information that tells the system where the operating system is located and helps initiate the boot process.

Correct Answer: MP3Stego

MP3Stego is a tool that allows data to be hidden within MP3 files, a common method used in steganography to covertly transmit information.

Correct Answer: Symmetric uses one key, while asymmetric uses two keys

Symmetric cryptography uses the same key for both encryption and decryption, while asymmetric cryptography uses a pair of keys (public and private) for encryption and decryption.

Correct Answer: A substitution cipher

The Caesar cipher is a type of substitution cipher where each letter in the plaintext is shifted by a certain number of positions in the alphabet.

Correct Answer: To restore normal business operations after a disaster

A disaster recovery plan (DRP) outlines the steps necessary to restore business operations following a disaster or major disruption.

Correct Answer: Documentary evidence

Documentary evidence refers to data stored in electronic form, such as emails, phone logs, or other digital documents that support a legal case.

Correct Answer: Pwnage

Pwnage is a tool specifically used to unlock iPod Touch devices and can assist in bypassing certain security features.

Correct Answer: Cell-phone forensics

Cell-phone forensics involves analyzing the contents of mobile devices, such as call logs, text messages, and application data, for investigative purposes.

Correct Answer: Vigenre cipher

The Vigenre cipher is a polyalphabetic substitution cipher that uses a series of different monoalphabetic ciphers selected based on a keyword to encrypt the text.

Correct Answer: To protect the privacy and security of health-related data

HIPAA ensures the protection and confidentiality of health information in the United States, particularly with regard to electronic records.

Correct Answer: Email headers

Email headers contain essential information, such as the sender's IP address and routing path, which can be used to identify the source of an email.

Correct Answer: Data about data, such as when a file was created or modified

Metadata provides additional information about a file, such as its creation date, modification date, file size, and permissions.

Correct Answer: Ophcrack

Ophcrack is a password-cracking tool that uses rainbow tables to crack Windows local machine passwords by finding hash collisions.