What is a key characteristic of ransomware?

• A. It is designed to enhance data access
• B. It encrypts user data and demands payment to unlock it
• C. It increases user network performance
• D. It is a commonly used antivirus technique

Answer: (B)

Ransomware is specifically designed to compromise user data by encrypting it, rendering it inaccessible to the user. Once the data is encrypted, the attacker typically demands a ransom payment, often in cryptocurrency, promising to provide a decryption key upon receiving the payment. This characteristic defines ransomware and distinguishes it from other types of malware.

The other options present concepts that do not relate to the nature or purpose of ransomware. For instance, enhancing data access, increasing network performance, or utilizing antivirus techniques are not functions associated with ransomware. These options instead describe functions that would be aimed at improving a system's security or usability, rather than taking it hostage as ransomware does.