Our Incident Response services provide rapid and effective solutions to contain, eradicate, and recover from cyberattacks, minimizing impact and restoring normal operations.
When a security incident occurs, a swift and effective response is critical. ReactiveZero's Incident Response services help you manage cyberattacks from initial detection through containment, eradication, and recovery. Our experienced team minimizes damage, reduces downtime, and helps you emerge stronger and more resilient.
Six phases on one clock: from the runbooks and access agreed before anything happens, to the review that formally closes the incident.
Agreed before any incident: named contacts, an out-of-band channel, pre-signed access and evidence-handling terms, and a playbook tested against your environment.
You receive Playbook and call tree
Triage the alert, pull EDR telemetry and logs, confirm compromise and build the first timeline of affected hosts, accounts and data.
You receive First situation report
Isolate affected hosts, revoke sessions and credentials, block attacker infrastructure, and capture memory and disk images before anything is changed.
You receive Containment log and evidence set
Map the full intrusion, remove persistence, malware and rogue accounts, close the entry point and confirm no foothold remains.
You receive Root cause and indicators
Rebuild or restore systems from verified clean backups, rotate secrets, and return services in agreed priority order under heightened monitoring.
You receive Recovery plan and sign-off
A blameless post-incident review: full timeline, what detection and process missed, and a prioritised hardening list with owners and dates.
You receive Post-incident report
Timings shown are illustrative.
Retainer clients get priority access to our incident-response team through a dedicated emergency line, so when something goes wrong you reach experienced responders quickly instead of a queue. During onboarding we agree response targets, escalation paths and rules of engagement up front and keep your key contacts and environment details on file, which removes the delay of scoping under pressure. You can reach our emergency line on +31 10 322 0229. That head start is often the difference between a contained event and a full-blown crisis.
The best time to prepare for an incident is before one happens. We help you build or sharpen your incident-response plan: defining roles and responsibilities, escalation and communication paths, containment and recovery playbooks, and the reporting duties you face under NIS2 and, for financial entities, DORA. We tailor the plan to your systems, your team and your risk profile, and align it with your backups, logging and detection so it actually works on the day. The result is a practical, tested plan your people can follow under pressure.
A plan on paper is untested until people walk through it. We run tabletop exercises that put your team through a realistic incident scenario — ransomware, a data breach, a compromised supplier — and surface the gaps in decisions, communication and authority before a real attacker does. Sessions can involve technical responders, management and, where relevant, legal and communications staff, and can include a board-level briefing. Afterwards you receive a clear debrief with prioritised improvements to your plan, your tooling and your team's readiness.
Ready to strengthen your security posture? Let's discuss how we can help protect your organization.