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Guide to System Hardening: Checklist & Best Practices [2026] | Huntress
System hardening reduces attack surfaces by securing configurations across hardware, software, and networks. Key practices include disabling unnecessary services and ports, applying patches promptly, enforcing least-privilege access, enabling multi-factor authentication, encrypting sensitive data, and auditing logs regularly. Following established frameworks like CIS Benchmarks helps organizations systematically identify and close security gaps before attackers can exploit them.