--- title: "CISO Guide to Cyber Resilience: Risk, Recovery… | Firevault" description: "Threat modelling, attack paths, blast radius and recovery from the CISO seat, and an honest read of where Offline Secure Storage, Control Modules and Control…" lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://fire-vault.com/#organization", "name": "Firevault", "legalName": "Firevault Limited", "url": "https://fire-vault.com", "logo": { "@type": "ImageObject", "url": "https://fire-vault.com/logo.png", "width": 200, "height": 60 }, "foundingDate": "2025-03", "description": "Protect what matters with Offline Secure Storage and control what moves with Control by Firevault. Physically disconnected, always reachable by you.", "address": { "@type": "PostalAddress", "addressCountry": "GB", "addressLocality": "United Kingdom" }, "contactPoint": [ { "@type": "ContactPoint", "contactType": "customer service", "email": "hello@fire-vault.com", "availableLanguage": "English", "areaServed": [ "GB", "EU", "US", "AE" ] } ], "sameAs": [ "https://www.linkedin.com/company/firevault", "https://x.com/firevaultuk" ], "slogan": "Disconnect to Protect", "knowsAbout": [ "Offline Secure Storage", "Physical Air Gap Data Protection", "Ransomware Protection", "Data Sovereignty", "GDPR Compliance", "NIS2 Compliance" ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://fire-vault.com/#website", "name": "Firevault", "alternateName": [ "Firevault", "Firevault UK", "Firevault Limited" ], "url": "https://fire-vault.com", "publisher": { "@id": "https://fire-vault.com/#organization" }, "inLanguage": "en-GB", "description": "Protect what matters with Offline Secure Storage and control what moves with Control by Firevault. Physically disconnected, always reachable by you.", "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://fire-vault.com/learn?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "@type": "WebPage", "@id": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience#webpage", "url": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience", "name": "CISO Guide to Cyber Resilience: Risk, Recovery…", "description": "Threat modelling, attack paths, blast radius and recovery from the CISO seat, and an honest read of where Offline Secure Storage, Control Modules and Control…", "isPartOf": { "@id": "https://fire-vault.com/#website" }, "about": { "@id": "https://fire-vault.com/#organization" }, "primaryImageOfPage": { "@type": "ImageObject", "url": "https://zomvctmqpgirvjnvawlz.supabase.co/storage/v1/object/public/article-images/guides%2Fciso-guide-cyber-resilience.jpg" }, "inLanguage": "en-GB", "breadcrumb": { "@id": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience#breadcrumb" } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "@id": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience#breadcrumb", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://fire-vault.com" }, { "@type": "ListItem", "position": 2, "name": "Learn", "item": "https://fire-vault.com/learn" }, { "@type": "ListItem", "position": 3, "name": "Guides", "item": "https://fire-vault.com/learn/knowledge?filter=guides" }, { "@type": "ListItem", "position": 4, "name": "CISO Guide to Cyber Resilience: Risk, Recovery and Physical Control", "item": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience" } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "CISO Guide to Cyber Resilience: Risk, Recovery and Physical Control", "description": "Threat modelling, attack paths, blast radius and recovery from the CISO seat, and an honest read of where Offline Secure Storage, Control Modules and Control Blueprints do and do not help.", "url": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience", "image": "https://zomvctmqpgirvjnvawlz.supabase.co/storage/v1/object/public/article-images/guides%2Fciso-guide-cyber-resilience.jpg", "author": { "@type": "Person", "name": "Mark Fermor", "worksFor": { "@id": "https://fire-vault.com/#organization" }, "url": "https://fire-vault.com/why-oss/about" }, "publisher": { "@id": "https://fire-vault.com/#organization" }, "datePublished": "2026-08-28T06:40:38.954937+00:00", "dateModified": "2026-08-28T07:05:10.849702+00:00", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://fire-vault.com/learn/guides/ciso-guide-cyber-resilience" }, "inLanguage": "en-GB", "articleSection": "Guides", "wordCount": 1027, "isAccessibleForFree": true, "copyrightHolder": { "@id": "https://fire-vault.com/#organization" }, "copyrightYear": 2026 } ] --- Recent Breaches Breaches [2026 PowerSchool 62.4M records ](https://www.bleepingcomputer.com)[2026 DISA Global Solutions 3.3M records ](https://techcrunch.com)[2026 Globe Life 850K records ](https://www.securityweek.com)[2026 Lidl GB Customer contact data ](https://www.theguardian.com/business/2026/jun/11/lidl-gb-third-party-data-breach)[2026 Asahi Group Production systems disrupted ](https://www.reuters.com/technology/cybersecurity/asahi-says-cyberattack-disrupted-operations-japan-2025-09-29/)[2026 Kido International 8K records ](https://www.bbc.co.uk/news/articles/c623d7v0e5xo)[2026 Collins Aerospace (RTX) Check-in and boarding disruptio... ](https://www.bbc.co.uk/news/articles/c789e7l1z7po)[2026 Jaguar Land Rover Production and IT systems disru... ](https://www.bbc.co.uk/news/articles/cx2gx8p3rzeo)[2026 Peter Green Chilled Order and logistics data ](https://www.bbc.co.uk/news/articles/c0k7yy8n3g5o)[2026 Adidas UK Customer contact details ](https://www.bbc.co.uk/news/articles/c78jkev1el2o)[2026 PowerSchool 62.4M records ](https://www.bleepingcomputer.com)[2026 DISA Global Solutions 3.3M records ](https://techcrunch.com)[2026 Globe Life 850K records ](https://www.securityweek.com)[2026 Lidl GB Customer contact data ](https://www.theguardian.com/business/2026/jun/11/lidl-gb-third-party-data-breach)[2026 Asahi Group Production systems disrupted ](https://www.reuters.com/technology/cybersecurity/asahi-says-cyberattack-disrupted-operations-japan-2025-09-29/)[2026 Kido International 8K records ](https://www.bbc.co.uk/news/articles/c623d7v0e5xo)[2026 Collins Aerospace (RTX) Check-in and boarding disruptio... ](https://www.bbc.co.uk/news/articles/c789e7l1z7po)[2026 Jaguar Land Rover Production and IT systems disru... ](https://www.bbc.co.uk/news/articles/cx2gx8p3rzeo)[2026 Peter Green Chilled Order and logistics data ](https://www.bbc.co.uk/news/articles/c0k7yy8n3g5o)[2026 Adidas UK Customer contact details ](https://www.bbc.co.uk/news/articles/c78jkev1el2o) [View All →](/learn/breaches) [![Firevault - offline secure storage, physically disconnected from the internet](/assets/logo-color-DBVl0KCg.png)](/) Products Solutions [Why OSS](/why-oss) More [Help](/help)[Get started](/get-started) Overview Who this guide is forWhat the CISO is actually respon…The decisions you own, and what …Modelling the paths that matterReducing blast radiusThe questions to ask your own teamThe evidence to expectWhat happens when preventative c…Deciding what you actually needThe Control Blueprints most rele…Where to go nextSources and further readingAbout this guideMore [Guides](/learn/knowledge?filter=guides) Guides · 28 August 2026 # CISO Guide to Cyber Resilience: Risk, Recovery and Physical Control Threat modelling, attack paths, blast radius and recovery from the CISO seat, and an honest read of where Offline Secure Storage, Control Modules and Control Blueprints do and do not help. ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) Mark Fermor Director & Co-Founder, Firevault 6 min read Share [](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Ffire-vault.com%2Flearn%2Fguides%2Fciso-guide-cyber-resilience)[](https://twitter.com/intent/tweet?url=https%3A%2F%2Ffire-vault.com%2Flearn%2Fguides%2Fciso-guide-cyber-resilience&text=CISO%20Guide%20to%20Cyber%20Resilience%3A%20Risk%2C%20Recovery%20and%20Physical%20Control%0A%0AThreat%20modelling%2C%20attack%20paths%2C%20blast%20radius%20and%20recovery%20from%20the%20CISO%20seat%2C%20and%20an%20honest%20read%20of%20where%20Offline%20Secure%20Storage%2C%20Control%20Modules%20and%20Control%20Blueprints%20do%20and%20do%20not%20help.)[](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Ffire-vault.com%2Flearn%2Fguides%2Fciso-guide-cyber-resilience)[](mailto:?subject=CISO%20Guide%20to%20Cyber%20Resilience%3A%20Risk%2C%20Recovery%20and%20Physical%20Control&body=Threat%20modelling%2C%20attack%20paths%2C%20blast%20radius%20and%20recovery%20from%20the%20CISO%20seat%2C%20and%20an%20honest%20read%20of%20where%20Offline%20Secure%20Storage%2C%20Control%20Modules%20and%20Control%20Blueprints%20do%20and%20do%20not%20help.%0A%0Ahttps%3A%2F%2Ffire-vault.com%2Flearn%2Fguides%2Fciso-guide-cyber-resilience) ![CISO Guide to Cyber Resilience: Risk, Recovery and Physical Control](https://zomvctmqpgirvjnvawlz.supabase.co/storage/v1/object/public/article-images/guides%2Fciso-guide-cyber-resilience.jpg) Guides Why it matters ## What this means for organisations holding critical data Threat modelling, attack paths, blast radius and recovery from the CISO seat, and an honest read of where Offline Secure Storage, Control Modules and Control Blueprints do and do not help. **On this page**[Who this guide is for](#section-0)[What the CISO is actually respon…](#section-1)[The decisions you own, and what …](#section-2)[Modelling the paths that matter](#section-3)[Reducing blast radius](#section-4)[The questions to ask your own team](#section-5)[The evidence to expect](#section-6)[What happens when preventative c…](#section-7)[Deciding what you actually need](#section-8)[The Control Blueprints most rele…](#section-9)[Where to go next](#section-10)[Sources and further reading](#section-11)[About this guide](#section-12) On this page 1. [Who this guide is for](#section-0) 2. [What the CISO is actually responsible for](#section-1) 3. [The decisions you own, and what you can delegate](#section-2) 4. [Modelling the paths that matter](#section-3) 5. [Reducing blast radius](#section-4) 6. [The questions to ask your own team](#section-5) 7. [The evidence to expect](#section-6) 8. [What happens when preventative controls fail](#section-7) 9. [Deciding what you actually need](#section-8) 10. [The Control Blueprints most relevant to this role](#section-9) 11. [Where to go next](#section-10) 12. [Sources and further reading](#section-11) 13. [About this guide](#section-12) ## Who this guide is for This guide is written for chief information security officers and heads of security who already have a control programme and need to reduce blast radius and prove recoverability rather than add more detection. ## What the CISO is actually responsible for - A defensible view of the threats that matter to this organisation, not the industry at large. - Attack path analysis, and the blast radius that follows a privileged or identity compromise. - Containment: the ability to stop movement quickly and decisively during an incident. - Assurance that crown-jewel data and clean recovery data survive an attacker with administrative rights. - An accurate statement of residual risk to the board. ## The decisions you own, and what you can delegate - **Own** the threat model, the control strategy and the residual risk statement. - **Own** the containment authority: who may disconnect what, and how fast. - **Delegate** operations, tuning and engineering, against clear outcomes. - **Delegate** testing execution, but own the scenario design. ## Modelling the paths that matter Map the routes to your highest-value outcomes using an established taxonomy such as MITRE ATT&CK, then trace what each path reaches. The useful output is not a heat map. It is a short list of dependencies whose compromise gives an adversary everything at once. - Identity compromise: tier-zero accounts, federation, and the consoles that trust them. - Management plane compromise: hypervisor, backup, endpoint and network administration. - Supplier and remote maintenance paths, which frequently sit outside standard controls. - Data staging and exfiltration routes for crown-jewel data. - Recovery paths that share credentials or infrastructure with the production estate. ## Reducing blast radius 1. Break the shared trust that lets a single credential reach multiple failure domains. 2. Separate the recovery domain so that it is not administered from the production domain. 3. Make containment a physical action that a responder can take in seconds without a change window. 4. Hold a verified set of crown-jewel and recovery data that an administrator cannot reach or alter. 5. Preserve evidence outside the estate so forensics survive the incident. ## The questions to ask your own team 1. If tier zero fell today, which controls would still hold, and how do we know? 2. How long does it take to isolate a compromised zone, measured, not estimated? 3. Which copies of our crown-jewel data can a domain administrator delete? 4. What evidence would survive an attacker who dwelt for thirty days before acting? 5. What residual risk are we knowingly carrying, and has the board accepted it? ## The evidence to expect - An attack path analysis with named dependencies and mitigation status. - Measured containment and isolation times from exercise, not policy. - Proof that recovery data is outside the administrative reach of the production estate. - A tested clean-room recovery procedure. - A residual risk register the board has actually seen. ## What happens when preventative controls fail Prevention buys time. It does not remove the need to answer a simple question: if an attacker holds your identity platform and your management console tonight, what still works tomorrow morning? Most organisations discover that their backup catalogue, their recovery credentials and their runbooks all depend on the systems that have just been taken. That is the dependency worth removing first. No control removes the possibility of a serious incident. The realistic goal is a smaller blast radius, a recovery path that does not depend on the compromised estate, and evidence that both were tested. ## Deciding what you actually need A CISO can usually name the dependency that needs removing. The choice is whether it is removed by process, by logical control, or by a physical one. Firevault is the company. It provides three distinct things, and the honest answer is often that you need one of them rather than all of them. - **[Offline Secure Storage®](/offline-secure-storage)** holds a defined set of critical records and clean recovery data physically disconnected from the live estate. It is a protected set, not a replacement for your backup infrastructure. - **[Control Modules](/control)** are a suite of nine purpose-built tools and techniques that give you physical control over the paths into and across your estate. Introduce only the modules that map to the risk you are treating. - **[Control Blueprints](/control-blueprints)** are proven combinations of those modules assembled for a named outcome, such as containing a live breach or governing third-party access. If your existing controls already deliver a tested recovery path that survives the compromise of your identity and management planes, and you can evidence it, you may not need any of this. Test that assumption before you buy anything. If you are unsure which of the three applies, the [Firevault Concierge](/find-my-oss) walks through the question set without a sales conversation. ## The Control Blueprints most relevant to this role This is the fullest view of the Firevault portfolio of any guide in the series, because the CISO usually has to hold the whole picture. Control by Firevault is a set of nine Control Modules, grouped into the FIRE layer (Firebreak, Isolate, Relay, Execute) and the VAULT layer (Validate, Archive, Unlink, Lock, Transfer). Seven Control Blueprints combine those modules for a specific outcome. You do not need all nine modules, and most organisations start with one blueprint. - **[CP-01 Stop Kill-Chain Ransomware](/control-blueprints/cp-01)** uses Firebreak, Isolate, Execute. Read the [stop kill-chain ransomware guide](/learn/guides/stopping-kill-chain-ransomware-control-blueprint). - **[CP-02 Contain Active Breaches](/control-blueprints/cp-02)** uses Firebreak, Isolate, Execute. Read the [contain active breaches guide](/learn/guides/containing-active-breaches-control-blueprint). - **[CP-03 Control Third-Party Access](/control-blueprints/cp-03)** uses Validate, Relay, Lock. Read the [control third-party access guide](/learn/guides/controlling-third-party-access-control-blueprint). - **[CP-04 Enforce Physical Segmentation](/control-blueprints/cp-04)** uses Firebreak, Isolate, Unlink. Read the [enforce physical segmentation guide](/learn/guides/enforcing-physical-segmentation-control-blueprint). - **[CP-05 Protect Critical Infrastructure](/control-blueprints/cp-05)** uses Firebreak, Isolate, Relay, Execute. Read the [protect critical infrastructure guide](/learn/guides/protecting-critical-infrastructure-control-blueprint). - **[CP-06 Prove Compliance Through Control](/control-blueprints/cp-06)** uses Validate, Lock, Archive. Read the [prove compliance through control guide](/learn/guides/proving-compliance-through-control-blueprint). - **[CP-07 Protect Aviation and Aerospace Networks](/control-blueprints/cp-07)** uses Firebreak, Isolate, Validate, Relay. Read the [protect aviation and aerospace networks guide](/learn/guides/protecting-aviation-and-aerospace-networks-control-blueprint). The full set is on the [Control overview](/control) and the [Control Blueprints index](/control-blueprints). ## Where to go next Take the architecture detail from the [security architecture guide](/learn/guides/security-architecture-guide), the recovery mechanics from the [IT director guide](/learn/guides/it-director-guide-ransomware-recovery), and the board framing from [cyber security for boards](/learn/guides/cyber-security-for-boards). Our [crown jewels audit](/learn/guides/crown-jewels-audit) is a practical first step. ## Sources and further reading - [MITRE ATT&CK](https://attack.mitre.org/) - [NCSC, Mitigating malware and ransomware attacks](https://www.ncsc.gov.uk/guidance/mitigating-malware-and-ransomware-attacks) - [CISA StopRansomware](https://www.cisa.gov/stopransomware) - [NIST Cybersecurity Framework 2.0](https://www.nist.gov/cyberframework) - [ISO/IEC 27001](https://www.iso.org/standard/27001) ## About this guide **Author** Mark Fermor, Firevault. **Reviewed by** Firevault security research. **Last reviewed** 28 August 2026. This guide draws on primary regulatory and technical sources together with Firevault's own field work on physical isolation and offline recovery. It is guidance, not legal advice. Where a legal or regulatory duty is in question, take advice on your own circumstances. Other guides in this series are listed on the [role guide hub](/learn/guides/by-role). About the author ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) ### Mark Fermor [](https://www.linkedin.com/in/mfermor) Director & Co-Founder Co-founder of Firevault, focused on offline secure storage and protecting individuals and businesses from fraud, fines, loss and damage. Speaker, owner and advisor. The Firevault view**Control by Firevault governs the physical paths into your systems.**[Explore Control →](/solutions/control) Keep a clean copy**Offline Secure Storage® holds a copy no attacker can reach.**[Why #OSS →](/why-oss) Get started**Get started, or talk to a member of the team.**[Get started →](/get-started) How Firevault would handle this ## A recovery copy an attacker cannot reach Offline Secure Storage® keeps a clean copy of your data on hardware that is physically disconnected, so backup and recovery do not depend on systems an intruder can touch. [Get started](/get-started)[Talk to the team](/demo) **Hardware**Your copy sits on dedicated encrypted hardware **Disconnect**Offline by default, connected only when you say so **Recovery**A known-clean copy to rebuild from, on your timetable **Location**Held in a secure Firevault Bunker ## Continue learning - [ ### Security Architecture Guide: Physical Isolation, Segmentation and Cyber Resilience The deepest guide in the series: trust boundaries, attack paths, failure domains, Layer 1 isolation versus logical segmentation, control and management planes, Zero Trust, the Purdue Model and IEC 62443. Read guide ](/learn/guides/security-architecture-guide) - [ ### Cyber Risk & Compliance Guide: Controls, Evidence and Resilience for GRC Leaders How risk and compliance leaders can move from control existence to control effectiveness: risk treatment, evidence, third-party assurance, exceptions and remediation that survive audit. Read guide ](/learn/guides/cyber-risk-and-compliance-guide) - [ ### IT Director's Guide to Ransomware Recovery, Backups and Infrastructure Resilience The practical recovery guide: immutable versus offline, Active Directory rebuild, management plane compromise, clean recovery environments, restore testing and realistic RTO and RPO. Read guide ](/learn/guides/it-director-guide-ransomware-recovery) - [ ### The CIO & CTO Guide to Cyber Resilience, Architecture and Recovery A technology leader's view of resilience: dependency mapping, recovery architecture, identity and cloud concentration, IT and OT convergence, and where physical controls earn their place. Read guide ](/learn/guides/cio-cto-guide-cyber-resilience) Related Reading ## You may also find these useful [ ![Protecting Students, Peers and Partners: A Practical Education Data Briefing](/__l5e/assets-v1/6ecf6bfc-3d28-40a7-8a6a-2d42fe36a21a/safeguarding-education-data-2026-v2-2x.jpg) Guides ### Protecting Students, Peers and Partners: A Practical Education Data Briefing A practical, forward-looking briefing to help schools, colleges and universities protect students, staff and partner data after the Department for Education breach. 29 Jul 2026 13 min ](/news/guide-safeguarding-education-data)[ ![Urgent Briefing and Advice: Protecting Personal Data for High-Profile Figures in the Public Eye](/__l5e/assets-v1/084c38b8-253b-4cc2-9056-c78a2fbd36c3/urgent-warning-triangle-20260714-2x.jpg) Guides ### Urgent Briefing and Advice: Protecting Personal Data for High-Profile Figures in the Public Eye Practical steps for serving and former politicians, councillors, campaigners, journalists, executives, broadcasters and anyone in the public eye, covering email security, device hygiene, threat handling and offline secure storage. 14 Jul 2026 22 min ](/news/urgent-guide-protecting-personal-data-high-profile-public-eye)[ ![500,000 Volunteers Breached Through Authorised Access: A Controlled Access Buyer's Guide](https://zomvctmqpgirvjnvawlz.supabase.co/storage/v1/object/public/article-images/news%2Fcontrolled-access-buyers-guide.jpg) Guides ### 500,000 Volunteers Breached Through Authorised Access: A Controlled Access Buyer's Guide In April 2026, approved researchers exfiltrated the health records, genetic data, and medical histories of 500,000 UK Biobank volunteers through authorised access channels, then listed the data for sale on Alibaba. The breach was not caused by a hack. It was caused by a model that assumes licence agreements can prevent data theft. This guide covers why that model fails and what physical controls replace it. 23 Apr 2026 18 min ](/news/controlled-access-buyers-guide-offline-secure-storage) ![Mark Fermor](/assets/mark-fermor-aWtKNSv7.jpg) ![David Bailey](/assets/david-bailey-Dgqj8eaE.jpg) ![Kenny Phipps](/assets/kenny-phipps-CVyooRsR.jpg) Online Now Concierge ## Put this guide into practice Ready to apply what you have learned? Explore how Control by Firevault governs the physical paths into your systems. Takes about 2 minutes. No account needed. Find Out Free 2 mins No sign-up