Incident Response Retainer & Ransomware Readiness: Responders on Call When It Matters
When ransomware hits or data leaks, the first hours decide the cost. An incident response retainer means experienced responders are already contracted, already know your environment and can start within an hour. You do not need to find a firm, agree terms and brief strangers in the middle of a crisis.
Mutex Systems provides retainers with a 24-hour hotline and initial response within one hour. They include chain-of-custody digital forensics, containment, recovery support and help meeting ICO, NIS2, DORA and PTA reporting deadlines. Ransomware readiness work beforehand makes the bad day shorter.
Or call our London office on 020 3307 529901Why it matters now
The risk behind this service
Based on incidents and figures in our UK & Europe threat report.
- Ransomware leak-site victims rose by about a third in 2026, and most cases now involve data theft as well as encryption.
- Reporting deadlines are short: 72 hours for UK GDPR, a 24-hour early warning under NIS2, and fast classification under DORA. You cannot meet them while still hiring a responder.
- Cyber insurers increasingly ask for a tested incident response plan and a named response provider.
Who this is for
- Organisations without a 24/7 in-house incident response team
- Regulated firms facing NIS2, DORA, UK GDPR or PTA reporting deadlines
- Businesses renewing cyber insurance
- Managed SOC customers who want guaranteed responder time
- Boards that want a rehearsed ransomware plan
- Companies that have just suffered an incident and need help now
02Services
What we deliver
Incident Response Retainer
Pre-agreed terms, a 24-hour hotline, initial response within one hour and pre-allocated responder hours.
Emergency Incident Response
Not on retainer? Call us. We triage, contain and investigate active incidents and help you regain control.
Digital Forensics
Disk, memory, log and cloud forensics with chain-of-custody evidence that holds up for insurers, regulators and courts.
Ransomware Readiness Assessment
Review backups, identity, segmentation and detection against the steps ransomware gangs actually take.
Tabletop Exercises
Facilitated scenarios for executives and technical teams covering ransomware, data leaks and insider threats.
Incident Response Plan & Playbooks
A written plan, roles, contact trees and playbooks aligned to the SANS and NIST incident-handling models.
Learn moreRegulator Notification Support
Help preparing ICO, NIS2, DORA, SBP and PTA notifications with accurate timelines.
Compromise Assessment
A proactive hunt for signs of existing compromise, useful after an acquisition or a near miss.
Learn more03Business impact
What a retainer changes when an incident hits
The difference between finding help during a crisis and having it already contracted.
| Factor | No retainer | ● With a Mutex IR retainer |
|---|---|---|
| Speed of response | Hours or days lost finding, contracting and briefing a responder. | Initial response within one hour from a team that already knows your estate. |
| Cost of the incident | Longer downtime and wider spread raise recovery and business-interruption costs. | Faster containment limits spread, downtime and data loss. |
| Regulatory deadlines | Notification timelines missed while facts are still unclear. | Evidence and timelines prepared for ICO, NIS2, DORA and PTA reporting. |
| Insurance | Insurer questions about planning and providers go unanswered. | A named provider and a tested plan support cover and claims. |
| Evidence quality | Logs overwritten and systems rebuilt before evidence is captured. | Chain-of-custody forensics preserved from the first hour. |
| Leadership confidence | Executives improvise decisions under pressure. | Roles and decisions rehearsed in tabletop exercises. |
04How it works
How an engagement runs
- 1
Onboarding
Learn your environment, contacts, tooling and obligations so responders are ready on day one.
- 2
Readiness
Review or write your IR plan and playbooks, and run a tabletop exercise.
- 3
Detect & triage
Hotline call, initial response within one hour, scoping and severity assessment.
- 4
Contain, eradicate & recover
Stop the spread, remove the attacker, restore safely and monitor for return.
- 5
Report & improve
Root cause, timeline, regulator support and lessons learned that feed new controls.
What you receive
- Retainer agreement with hotline and response times
- Incident response plan, playbooks and contact tree
- Tabletop exercise report with improvements
- Forensic reports and incident timelines for regulators and insurers
- Post-incident lessons-learned report
05Compliance
Frameworks and regulations this supports
SANS Incident Response
The six-step PICERL model our playbooks follow.
UK GDPR
Reportable personal data breaches must be notified to the ICO within 72 hours.
NIS2 Directive
24-hour early warning and 72-hour incident notification for in-scope entities.
DORA
Classification and reporting of major ICT-related incidents.
ISO 27001:2022
Controls 5.24 to 5.28 cover incident planning, response, learning and evidence.
PTA CTDISR-2025
Telecom licensees must report security incidents to PTA.
grComply · GRC platform
Incidents, deadlines and lessons in one record
grComply logs each incident and links it to the reporting obligations it triggers, tracking every deadline. Lessons learned become tracked actions against the right controls, so the same gap is not exploited twice.
Explore grComply- Notification deadlines tracked for ICO, NIS2, DORA, SBP and PTA
- Incident records as evidence for ISO 27001 controls 5.24 to 5.28
- Lessons learned turned into owned, dated actions
- Risk register updated with new scenarios
What is an incident response retainer?
It is an agreement under which a specialist firm is on standby to respond to your cyber incidents. Terms, contacts and response times are agreed in advance, so responders can start immediately instead of being contracted mid-crisis.
How quickly will you respond?
Retainer clients get a 24-hour hotline and initial response within one hour for active incidents, remotely first and on site where needed.
We have been hit by ransomware and are not a client. Can you help?
Yes. Call 020 3307 5299. We provide emergency incident response to non-retainer organisations, subject to availability, starting with triage and containment.
Should we pay the ransom?
That is a business and legal decision. We give you the facts to make it: what was taken, whether backups are usable and how long recovery will take. Sanctions rules and law-enforcement guidance must be considered, and paying does not guarantee data deletion.
What is a tabletop exercise?
A facilitated discussion in which leaders and technical teams work through a realistic incident scenario step by step. It tests decisions, communications and the plan without touching live systems.
Do unused retainer hours go to waste?
Retainers can include proactive work such as readiness assessments, tabletop exercises and compromise assessments, so pre-allocated time builds resilience even in a quiet year.
Does a retainer help with cyber insurance?
Many insurers ask whether you have a tested plan and a response provider. A retainer with a documented plan and exercise records helps answer those questions.
Have responders ready before you need them
Set up a retainer, or call 020 3307 5299 now if you are dealing with an active incident.