The primary purpose of establishing log retention policies is to balance security, compliance, and operational needs. Log retention policies define how long different types of log data should be stored before being archived or deleted. These policies ensure that logs are available for security incident investigation, compliance with regulatory requirements (such as PCI DSS, HIPAA, or SOX), and legal proceedings when needed. At the same time, they help manage storage costs and system performance by preventing the unnecessary accumulation of outdated log data. Effective log retention policies consider factors such as regulatory requirements, the organization's risk profile, storage limitations, and the potential value of historical log data for security analysis.
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