What aspect of information security does availability cover?

Availability in the context of information security refers to ensuring that data and resources are accessible to authorized users when needed. This principle emphasizes the importance of maintaining systems and controls that prevent downtime or interruption of service, thus enabling timely access to critical information. Ensuring availability involves implementing measures like redundant systems, regular backups, and disaster recovery plans, which collectively support the seamless access of authorized users to necessary data.

The other choices address different aspects of information security. For instance, the security of data from theft focuses on protecting data from unauthorized access or breaches, while data encryption practices are aimed at securing information by transforming it into a format that can only be understood with the correct decryption key. User training is crucial for fostering a culture of security and ensuring that personnel understand their roles in safeguarding information but does not directly relate to the aspect of availability.