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An organization has established a policy prohibiting ransom payments if subjected to a ransomware attack. Which of the following is the MOST effective control to support this policy?
Correct Answer: B
When an organization has a policy prohibiting ransom payments in the event of a ransomware attack, the most effective control to support this policy is creating immutable backups. Here's why: * Immutable Backups: * Definition: Immutable backups are backups that cannot be altered, deleted, or modified in any way once they are created. This ensures that a clean, untampered copy of data is always available. * Protection Against Ransomware: Ransomware attacks typically encrypt data and demand a ransom to decrypt it. With immutable backups, the organization can restore the affected systems using the backup without paying the ransom, thereby adhering to their policy. * Effectiveness: * Restoration Capability: Immutable backups provide a reliable means to restore data to its state before the ransomware attack. This restoration capability negates the need to consider paying the ransom to regain access to encrypted data. * Compliance with Policy: By having a secure and untouchable backup, the organization ensures compliance with its no-ransom policy as it can recover operations without engaging with the attackers. * Comparison with Other Options: * Vulnerability Scanning: While important, this primarily helps in identifying vulnerabilities and does not directly help in data recovery post-ransomware attack. * Patching: Regular patching reduces the risk of ransomware infection but does not aid in recovery if an attack occurs. * Intrusion Detection: Continuous monitoring can detect ransomware activities but does not provide a solution for restoring data after an attack. * References: * The CRISC Review Manual emphasizes the importance of data backups and specifically highlights the advantages of immutable backups in maintaining data integrity and availability in the face of attacks .