Episode 63 — A.8.19–8.20 — Software installation on operational systems; Network security

https://is1-ssl.mzstatic.com/image/thumb/Podcasts221/v4/43/3c/f0/433cf08f-87a6-3add-146c-ce810b487626/mza_5063864341569826942.jpg/600x600bb.jpg

Framework - ISO 27001 (Cyber)

Jason Edwards

71 episodes

2 days ago

The ISO/IEC 27001 Framework is the internationally recognized standard for establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). It provides a systematic approach to managing sensitive information through risk management, governance, and control implementation. At its core, ISO 27001 helps organizations protect the confidentiality, integrity, and availability of data—whether stored, processed, or transmitted—by aligning security practices with business objectives and regulatory requirements. The framework is built around a risk-based process, requiring organizations to identify potential threats, assess their likelihood and impact, and implement appropriate controls from the companion standard ISO/IEC 27002. These controls cover a wide range of areas including asset management, access control, cryptography, operations security, and supplier relationships. By tailoring these controls to organizational needs, ISO 27001 supports both flexibility and accountability—ensuring that security measures are not just technical but also strategic and operational. Beyond compliance, ISO 27001 fosters a culture of continuous improvement through regular audits, performance monitoring, and leadership involvement. Certification to the standard demonstrates to customers, partners, and regulators that an organization follows internationally accepted best practices for managing information security risk. More than a checklist, ISO 27001 functions as an ongoing management framework that integrates security into every level of organizational decision-making, helping build trust, resilience, and long-term operational stability.

All content for Framework - ISO 27001 (Cyber) is the property of Jason Edwards and is served directly from their servers with no modification, redirects, or rehosting. The podcast is not affiliated with or endorsed by Podjoint in any way.

Courses

Education,

Technology

Episode 63 — A.8.19–8.20 — Software installation on operational systems; Network security

Framework - ISO 27001 (Cyber)

13 minutes

2 months ago

Episode 63 — A.8.19–8.20 — Software installation on operational systems; Network security

A.8.19 restricts software installation on operational systems to prevent drift, reduce attack surface, and maintain license and support compliance. For the exam, distinguish between development/test flexibility and production control: in operational environments, only authorized, vetted software from approved repositories may be installed, with changes governed by documented requests, peer review, and rollback plans. Baselines should define permissible packages, versions, and configurations, enforced by configuration management or MDM. Evidence includes deployment manifests, signed artifacts, and change records tied to assets and owners. Common pitfalls are local admin rights that allow shadow installs, emergency fixes that bypass approval and remain, and unmanaged plugins or browser extensions that introduce risk. Strong practices quarantine or rebuild noncompliant systems, integrate SBOM tracking, and verify that installed software aligns with vulnerability management scopes and patch cadences so that coverage is real, not assumed.

A.8.20 addresses network security, requiring designs and controls that protect information in transit and manage exposure. Candidates should cover segmentation by trust level and function, least-privilege routing and firewall rules, use of secure protocols, and protective services like DNS security, email authentication, and web application firewalls where appropriate. Zero-trust patterns emphasize identity-aware access and continuous verification rather than implicit trust based on location. Monitoring complements prevention through flow logs, intrusion detection, and anomaly detection tuned to expected behaviors. Pitfalls include flat networks that enable lateral movement, legacy cleartext protocols, and complex rules without ownership or recertification. Effective implementations maintain rule life cycles with justification and expiry, test egress controls to prevent data exfiltration, and document provider-managed boundaries in cloud environments, including shared responsibility delineations. Candidates should be ready to explain how installation discipline reduces exploitable code paths while network security constrains blast radius, and how both depend on accurate inventories, change control, and continuous validation to satisfy auditors and real-world resilience goals. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.