Risk acceptance is an approach to risk management wherein the potential risk is acknowledged, and a conscious decision is made not to take any specific action to mitigate it. This approach is usually taken when the potential risk is deemed acceptable or when the cost of mitigating the risk outweighs the potential impact.

Vishing, which stands for voice phishing, involves using voice or telephone calls to deceive and manipulate individuals into revealing sensitive information. The attacker may pretend to be a legitimate entity, such as a bank representative, and persuade the victim to provide personal or financial details over the phone. Vishing exploits the trust people often have in phone calls and can be used in combination with other attacks.

Option 1: Incorrect. A firewall is responsible for controlling incoming and outgoing network traffic based on predetermined security rules. While it can help protect against unauthorized access, it does not specifically ensure confidentiality of sensitive information.
Option 2: Correct. A VPN (Virtual Private Network) creates a secure, encrypted connection between a user's device and a private network, such as a corporate network, over the internet. This helps protect against unauthorized data access and ensures the confidentiality of sensitive information.
Option 3: Incorrect. An Intrusion Detection System (IDS) monitors network traffic for suspicious activity or known attack patterns.
While it can help detect and alert to potential unauthorized access attempts, it does not specifically ensure confidentiality of sensitive information.
Option 4: Incorrect. An antivirus software is used to detect, prevent, and remove malware infections. While it can help protect against unauthorized access, it does not specifically ensure confidentiality of sensitive information.

The primary goal of vulnerability management is to identify and prioritize vulnerabilities in a system or network and take appropriate measures to minimize their impact. It involves implementing patch management, deploying security controls, and establishing incident response procedures.

The main purpose of risk management in the context of cybersecurity is to identify and prioritize potential risks associated with a system, network, or application. By understanding the risks, organizations can develop effective mitigation strategies and allocate resources accordingly. Risk management involves assessing the likelihood and impact of potential risks, determining their significance to the organization, and implementing appropriate controls to mitigate or reduce those risks to an acceptable level.