Episode 56 — Safeguard 12.3 – Remove legacy and unused devices

Episode 56 — Safeguard 12.3 – Remove legacy and unused devices

Safeguard 12.3 requires organizations to identify, isolate, and remove legacy or unused network devices that no longer serve operational or security purposes. Outdated hardware and abandoned configurations pose a hidden but significant risk—they often lack vendor support, remain unpatched, and may still provide active network connections that attackers can exploit. These devices can also create bottlenecks or interfere with newer technologies, introducing inefficiencies alongside vulnerabilities. The safeguard directs enterprises to inventory all network devices, compare them against current architectural needs, and decommission those that are obsolete or unneeded. Proper decommissioning includes securely wiping configurations, removing credentials, and updating documentation to reflect the change. By eliminating legacy and unused assets, organizations simplify their infrastructure and reduce attack surface, improving both performance and manageability.

To operationalize this safeguard, enterprises should integrate network discovery tools with configuration databases to identify inactive or unsupported devices automatically. Clear criteria—such as end-of-life status, replacement availability, and utilization metrics—guide retirement decisions. Decommissioning procedures must include secure disposal of hardware and revocation of any associated access rights or certificates. For systems that cannot be immediately retired due to dependencies, isolation within a restricted network segment mitigates risk until full replacement occurs. Documentation updates ensure that inventory records, topology diagrams, and change logs remain accurate. Regular reviews, conducted at least annually, confirm that no abandoned assets persist. By institutionalizing these practices, Safeguard 12.3 transforms infrastructure management into a lifecycle-driven process—one that prioritizes security, efficiency, and accountability over convenience or habit.
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Avsnitt(83)

Welcome to the CIS 18 Control Framework

Welcome to the CIS 18 Control Framework

18 Okt 20251min

Episode 82 — Safeguard 18.2 – Internal and red team exercises

Episode 82 — Safeguard 18.2 – Internal and red team exercises

Safeguard 18.2 extends penetration testing to include internal assessments and red team exercises that emulate an attacker with initial access. Internal testing evaluates how far a threat could move l...

18 Okt 202512min

Episode 81 — Safeguard 18.1 – External testing programs

Episode 81 — Safeguard 18.1 – External testing programs

Safeguard 18.1 requires organizations to establish and maintain a formal penetration testing program that includes recurring external assessments. External tests simulate real-world attackers operatin...

18 Okt 202510min

Episode 80 — Overview – Why penetration testing validates defenses

Episode 80 — Overview – Why penetration testing validates defenses

Control 18—Penetration Testing—closes the CIS framework by validating how well all other controls perform under real-world conditions. While vulnerability scanning identifies potential weaknesses, pen...

18 Okt 202510min

Episode 79 — Remaining safeguards summary (Control 17)

Episode 79 — Remaining safeguards summary (Control 17)

The remaining safeguards in Control 17 reinforce the full lifecycle of incident response—spanning preparation, communication, testing, and continuous improvement. These include assigning key response ...

18 Okt 20259min

Episode 78 — Safeguard 17.2 – Tabletop exercises

Episode 78 — Safeguard 17.2 – Tabletop exercises

Safeguard 17.2 emphasizes the importance of testing the incident response plan through structured tabletop exercises. These simulations bring together key personnel—from technical teams to executives—...

18 Okt 202510min

Episode 77 — Safeguard 17.1 – IR plan and playbooks

Episode 77 — Safeguard 17.1 – IR plan and playbooks

Safeguard 17.1 requires organizations to establish and maintain a comprehensive incident response process that defines scope, roles, responsibilities, and communication procedures. This process must i...

18 Okt 202510min

Episode 76 — Overview – Incident response principles

Episode 76 — Overview – Incident response principles

Control 17—Incident Response Management—defines how an organization prepares for, detects, responds to, and learns from security incidents. Even the most robust defenses can be breached, and when that...

18 Okt 202511min

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