The process of reducing attack surface and vulnerabilities in systems through configuration and best practices.
Security hardening is the process of tightening systems and configurations to reduce attack surface: stronger access control, patching, secure headers, least privilege, and better monitoring. For websites, hardening protects both users and search visibility - hacked sites often lose rankings quickly.
Hardening is not a one-time task - it’s ongoing hygiene paired with observability and incident response.
Browse related definitions in the same glossary category.
Access Control
Systems and policies that determine who can access resources and what actions they can perform.
Audit Logs
Records of system events and user actions, essential for security monitoring, debugging, and compliance.
Data Residency
Requirements specifying where data must be physically stored, often driven by regulatory compliance.
GDPR Compliance
Adherence to the General Data Protection Regulation, the EU law governing data privacy and user rights.
Penetration Testing
Authorised simulated attacks on systems to identify security vulnerabilities before malicious actors do.
Rate Limiting
A strategy for limiting network traffic. It puts a cap on how often someone can repeat an action within a certain timeframe.
Understanding "Security Hardening" is just the first step. Our team at TwoSquares specializes in technical SEO and digital strategy, helping brands turn complex concepts into measurable growth.