What should be set up to ensure encrypted files can still be decrypted if the original user account becomes corrupted?

The correct choice is to set up a Data Recovery Agent (DRA). A DRA is a designated account that is authorized to decrypt files that were encrypted by users under certain circumstances, such as when the original user account becomes corrupted or is no longer accessible. This ensures that sensitive data remains recoverable even if the encryption keys associated with the original user are lost or compromised.

In environments where file encryption is prevalent, having a DRA is essential for maintaining data availability and integrity. It functions as a safety net that allows administrators or designated personnel to access encrypted files as needed, ensuring business continuity and compliance with data protection policies.

Other options, while related to encryption and security, do not serve the specific purpose of ensuring access to encrypted files in the event of user account issues. A VPN pertains to secure connections over the internet, while GPG and PGP are encryption tools used primarily for securing communications rather than specifically addressing the recovery of encrypted files in the context of damaged user accounts.