Which method is commonly used to secure sensitive data on a server?

Encrypting sensitive data is a critical method for securing information on a server. This process transforms readable data into an encoded format that can only be accessed by individuals who possess the appropriate decryption key. By doing so, even if unauthorized parties gain access to the physical data, they are unable to interpret or utilize it without the key, thereby safeguarding sensitive information from breaches or theft.

While regular backups of data, installing antivirus software, and limiting user access are important aspects of an overall security strategy, they serve different purposes. Backups protect against data loss rather than directly securing data from unauthorized access. Antivirus software helps defend against malware and other threats, but does not inherently protect data that has already been compromised. Limiting user access is a valuable control measure to reduce potential vulnerabilities, but it does not prevent data from being accessed if an authorized user misuses their access. Encryption directly addresses the need for protecting the confidentiality of sensitive data, making it the most relevant method for this scenario.