When something goes wrong,
the first hour matters most.
Activation · Containment · Advisory · Recovery planning
Ransomware encrypting files. A compromised email account diverting payments. A supplier breach with access to your systems. How you respond in the first sixty minutes determines whether an incident becomes a recoverable event or a business-defining crisis. DefendVista provides structured incident response for UK SMEs: rapid activation, evidence-preserving containment, and clear-headed advisory through every stage.
Enterprise IR playbooks do not fit SME reality.
Large-firm IR assumes dedicated security teams, SIEM tooling, and clean system documentation. UK SMEs typically have none of those when an incident hits. The response has to work with what actually exists.
No in-house security team on standby
When ransomware hits at 11pm, your IT provider may not pick up. A managed service provider may not have incident response in their contract. The people dealing with it first are non-technical staff who have never rehearsed this. Our activation model is built around exactly that reality: clear first-hour guidance, rapid expert contact, and decisions taken with the people who are actually present.
Well-meaning actions cause as much damage as the attack
Powering off affected machines. Deleting the suspicious email. Resetting all passwords immediately. Telling colleagues before a comms plan exists. Each of these actions, taken instinctively and without guidance, can destroy forensic evidence, invalidate insurance cover, trigger unnecessary notifications, or spread panic in ways that worsen the outcome. The first call to us stops the improvisation.
Legal, regulatory, and insurance obligations create immediate pressure
The 72-hour ICO notification window begins the moment you become aware of a potential personal data breach, not when you have confirmed its scope. Cyber insurance cover can be voided by specific actions taken without insurer notification. SRA and FCA-regulated firms have their own notification obligations. Our response model tracks all of this from the first call, so obligations are not missed in the chaos.
Four incident types. Consistent patterns. Different first-hour priorities.
The incident type shapes the immediate response priorities. Ransomware needs containment before anything else. Business email compromise needs session revocation and bank contact. Each has a specific first-hour protocol.
Ransomware spreads laterally before files encrypt visibly. The instinct is to immediately tell everyone and investigate. The correct first action is network isolation of affected systems to stop propagation. We guide your team through isolation decisions, backup assessment, and the decision tree for whether to engage with the attacker communication, without destroying forensic evidence or voiding insurance cover.
Isolate affected devices, assess backup integrity, preserve ransom notes and logs, notify insurer before any further action.
A compromised email account has typically been accessed silently for days or weeks before anything visible happens. When it surfaces, the attacker is still in the session. Resetting the password alone does not revoke active sessions. We guide you through the correct revocation sequence, forwarding rule audit, sent items review, and out-of-band notification to the bank and any counterparties who may have received fraudulent instructions.
Revoke all sessions, audit forwarding rules and inbox filters, review sent items and contact any targeted suppliers or clients.
Not every data exposure requires ICO notification. The obligation is triggered by a breach that is likely to result in a risk to the rights and freedoms of individuals. Getting that assessment wrong in either direction has consequences: over-reporting creates regulatory overhead; under-reporting risks fines and reputational damage. We help you scope the breach, assess the notification obligation, and prepare the ICO submission if required, within the 72-hour window.
Identify what data was accessed and by whom, assess notification obligation, preserve access logs and evidence of the breach vector.
When a supplier contacts you to say their systems were compromised, the question is immediate: what access did they have to your systems and data, and is it still active? Supplier breaches often trigger cascading incidents because affected organisations do not audit their own exposure promptly. We help you assess what the supplier could reach, revoke any standing access, and determine whether your data was within the scope of their breach.
Audit and revoke supplier access, review shared credentials or portals, assess data exposure and notify ICO if personal data was within scope.
What the first person on the scene should do.
Before specialist help arrives, someone in your organisation is already dealing with this. This card is for them. It covers what to do, what not to do, and what to report. It should be rehearsed before it is needed.
Do / Don't card for first responders
This card is for the first person who notices something wrong: suspicious emails, locked files, strange pop-ups, account lockouts, or systems behaving unpredictably.
You are not expected to fix the incident. Your job is to freeze damage, preserve evidence, and escalate correctly.
- Stop and pause. Take a breath before touching anything.
- Disconnect the device from the network (Wi-Fi and Ethernet) if safe to do so.
- Take photos or screenshots of messages, pop-ups, ransom notes, or unusual behaviour.
- Note the time and what you were doing just before it happened.
- Report immediately using the agreed escalation route.
- Keep the device powered on unless told otherwise by your IT contact.
- Do not power off the device unless specifically instructed to do so.
- Do not delete emails, files, or alerts of any kind.
- Do not attempt to fix it by searching online for quick solutions.
- Do not reset passwords until directed by your security contact.
- Do not forward suspicious emails to colleagues to show them.
- Do not talk externally to suppliers, customers, or on social media.
What to report as a minimum
- Your name and role
- The device involved (your laptop, a shared PC, your phone)
- The time the issue was first noticed
- Exactly what looked wrong, including any wording shown on screen
- Whether sensitive or personal data may have been involved
Well-meaning actions taken in the first ten minutes can destroy logs, invalidate insurance cover, and weaken your regulatory or legal position. Calm, deliberate restraint protects the business. Call +44 (0)33 0122 4448 and let us guide the response.
This card should be paired with a formal incident response plan and rehearsed during tabletop exercises, not discovered for the first time during a real incident. Contact us to run a tabletop exercise with your team.
From first call to closed incident. Everything in between.
Our incident response service covers the full lifecycle: activation and immediate guidance, active containment support, regulatory obligation management, and the post-incident review that prevents recurrence.
Immediate Activation and First-Hour Guidance
Call the incident line. We assess what is happening, identify the incident type, and provide immediate structured guidance for the people who are present. No questionnaires. No holding music. The first call focuses on stopping the situation from getting worse while evidence is preserved.
Containment Support and Evidence Preservation
Isolation decisions, system preservation, log collection, and chain-of-custody documentation. We guide your team through the containment steps that are specific to your incident type, in the right sequence, so that evidence required for insurance, regulatory, or legal purposes remains intact.
Regulatory Notification Management
UK GDPR notification to the ICO, SRA breach reporting for solicitors and legal firms, FCA notification obligations for regulated financial firms, and documentation for any affected individuals. We manage the assessment of notification obligation and prepare the submission within the required window.
Insurer and Legal Liaison
Cyber insurance notifications must be made within specific timeframes and in the right format to preserve cover. We support the initial notification, provide the documentation the insurer requires, and liaise with appointed forensic or legal firms where your policy requires a specific process.
Post-Incident Review and Gap Remediation
Once immediate response is complete, we conduct a structured review: how the incident happened, which controls failed or were absent, what the attacker accessed, and what needs to change to prevent recurrence. The output is a prioritised remediation plan, not a long report.
Incident Response Planning and Tabletop Exercises
The most effective way to reduce incident costs is to have a tested plan before you need it. We build IR playbooks around your actual team structure and run tabletop exercises using realistic scenarios for your sector and systems. The plan is used, not filed.
No retainer. No process overhead. Call and we start.
Incident response activation should not require paperwork. Here is what happens from the moment you call.
Call the incident line: +44 (0)33 0122 4448
You reach a person, not a voicemail. Tell us what you are seeing. We ask a small number of focused questions to identify the incident type and immediate risk. This call takes five minutes and results in your first structured guidance.
Immediate first-hour guidance issued
Based on what you are describing, we provide specific steps for the people who are present: what to isolate, what to preserve, what not to touch, who else needs to be told internally right now. This guidance is adjusted in real time as the picture develops.
Regulatory and insurance obligations assessed immediately
On the first call, we assess whether a 72-hour ICO notification clock is running, whether your cyber insurance requires immediate notification, and whether sector-specific obligations (SRA, FCA, CQC) are triggered. These are not afterthoughts. They are first-hour considerations.
Active containment and evidence preservation support
We remain available throughout the containment phase. As your team takes isolation steps, we guide the sequence, document what was done and when, and help preserve the forensic state of affected systems for any subsequent investigation, insurance claim, or ICO inquiry.
Recovery planning and post-incident review
Once immediate response is complete, we move into recovery: restoring from backups, rebuilding affected systems in a verified-clean state, and preparing the post-incident review. The review is delivered as a short, prioritised action list, not a multi-week report. Remediation can begin within days.
The difference between a managed incident and a business crisis.
Every outcome below is a direct consequence of how the first hour was handled. None of them require advanced technology. They require a clear process, applied correctly, under pressure.
Breach contained before it spreads
Affected systems isolated before ransomware propagates or account access is used further. The difference between one compromised device and a network-wide encryption event.
Insurance cover preserved
Notification made to insurer within policy requirements. No unilateral decisions taken that could void cover. Documentation ready for the claim submission.
Evidence intact for any subsequent inquiry
Logs, system states, and access records preserved in a form usable for ICO submissions, insurance investigation, police reporting, or legal proceedings if required.
ICO and regulatory obligations met
72-hour notification submitted where required. Sector-specific obligations to SRA, FCA, or CQC tracked and met. No retrospective scramble to document what happened.
Recovery from verified clean state
Systems restored from backups verified to pre-date the compromise. No rebuilding from an image that may itself have been infected. Recovery timeline communicated accurately to stakeholders.
Post-incident review completed
Root cause identified. The specific control that failed or was absent. A short, ranked remediation list. Not a 40-page report. Actionable within days of the incident closing.
The difference is not the incident. It is the plan.
- Devices powered off immediately, destroying volatile memory and logs
- Passwords reset before sessions revoked, attacker notified and re-enters
- 72-hour ICO window missed because no one knew it was running
- Cyber insurer notified days later, coverage for the initial period disputed
- Backups found to include the ransomware payload, restoration fails
- Staff tell suppliers and customers before a comms plan exists
- No post-incident review, same vulnerability exploited again within months
- Affected systems isolated correctly, evidence preserved from first contact
- Session revocation sequence completed before password changes
- ICO notification obligation assessed on the first call, clock tracked
- Insurer contacted within policy requirements from hour one
- Backup integrity verified before recovery begins, clean restore confirmed
- Comms plan agreed before any external communication
- Root cause identified and remediation actioned within days of closure
Have a plan before the pressure is real.
Most SMEs build their incident response capability during an incident. A readiness engagement takes one conversation and gives you a documented first-hour procedure, a named escalation path, and a team that has rehearsed it. The cost of preparation is a fraction of the cost of improvising under pressure.
Every hour without structured guidance increases recovery cost and risk. Call the incident line directly.