Which of the following is an encryption tool?

• A. VeraCrypt
• B. Helix
• C. Nessus
• D. NMAP

Answer: (A)

Encryption tools protect data by turning it into an unreadable form that only someone with the right key can return to readable text. VeraCrypt fits this purpose by providing encrypted containers and the option to encrypt entire drives, keeping contents secure if the device is lost or stolen. It uses strong cryptographic algorithms and works across different operating systems, making it a practical way to safeguard sensitive information.

The other tools are used for different cybersecurity tasks. Helix is a security-focused live distribution for incident response and forensics, helping investigators analyze systems and gather evidence. Nessus is a vulnerability scanner that searches networks and hosts for security weaknesses. NMAP is a network discovery and port-scanning tool used to map out hosts and the services they offer. These utilities contribute to detection, assessment, and investigation rather than protecting data at rest.