12 May 2026

Systems hardening: what it is, phases, and why it should be combined with attack surface surveillance

To protect a technological infrastructure, one of the first measures implemented is hardening. The concept is simple: minimize a system's attack surface by eliminating everything unnecessary, and reinforcing what remains. Hardening a system is like removing all flammable material before someone tries to set it on fire. Services disabled, ports closed, default settings replaced, permissions reviewed. Hardening networks and systems is now a fundamental practice in any cybersecurity strategy. Any…

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