RSA (Rivest-Shamir-Adleman) is a widely accepted asymmetric encryption algorithm. Unlike symmetric algorithms, which use the same key for both encryption and decryption, asymmetric algorithms use a pair of keys -- a public key for encryption and a private key for decryption. This method allows for secure key exchange over an insecure channel without the need to share the private key. RSA operates on the principle that it is easy to multiply large prime numbers together to create a product, but it is hard to reverse the process, i.e., to factorize the product back into the original primes. This one-way function underpins the security of RSA.

The effectiveness of a security awareness program can be measured through various methods that assess both the knowledge and behavior of employees regarding security practices.

Online multiple choice exam on security principles: This method evaluates the employees' understanding of the security principles they have been taught. It's a direct measure of their knowledge and retention.

Testing with social engineering techniques by an approved penetration tester: This practical approach tests employees' reactions to real-life security threats, such as phishing or pretexting, which can indicate the effectiveness of the training in changing behavior.

Open source intelligence gathering on staff social media profiles: This method can reveal whether employees are adhering to security policies by not disclosing sensitive information publicly.

Option 3 is not a direct measure of a security awareness program's effectiveness, as practicing ethical hacking techniques is more about skills development rather than assessing awareness. Option 4, while important, does not directly measure the effectiveness of the security awareness program but rather the overall security posture of the organization.

The key principle a digital forensics investigator must adhere to is ensuring competence and the ability to justify their actions. This is crucial because the integrity of the investigation and the evidence must be maintained. Competence ensures that the investigator has the necessary skills and knowledge to handle and analyze the data correctly. Being able to justify their actions is important for the legal process, as every step of the investigation may be scrutinized in court.This principle aligns with the Information Security Management Principles, which emphasize the importance of procedural/people security controls and technical security controls to maintain the confidentiality, integrity, and availability of information.Reference: BCS Foundation Certificate in Information Security Management Principles1.

Appointing a Chief Information Security Officer (CISO) is the most effective action at the board level to improve the security culture within an organization using a top-down approach. The CISO plays a critical role in establishing and maintaining the enterprise vision, strategy, and program to ensure information assets and technologies are adequately protected. The CISO is responsible for leading the development and implementation of a security program across all aspects of the organization, which includes aligning security initiatives with business objectives, managing risk, and ensuring compliance with relevant laws and regulations. This strategic role not only helps in creating a robust security posture but also promotes a culture of security awareness throughout the organization. By having a dedicated executive responsible for security, it sends a clear message that the organization prioritizes information security and is committed to protecting its assets and stakeholders.

The method used to target senior individuals in an organization for coercing them into actions like misdirected high-value payments is known as awhaling attack. This type of attack is a more targeted version of phishing, aimed specifically at high-ranking executives or important individuals within an organization. The attackers masquerade as a senior player at the organization and use social engineering techniques to trick the target into performing actions such as transferring money or revealing sensitive information. Whaling attacks are highly personalized and often involve extensive research on the target to make the fraudulent requests seem legitimate and convincing.The term ''whaling'' is used because it refers to going after the ''big fish'' or ''whales'' of an organization, such as CEOs or CFOs, who have access to significant resources and sensitive information.Reference: Based on the information provided by Kaspersky's resource center on whaling attacks1.