Cybersecurity incidents have skyrocketed in recent years, evolving from an afterthought for many into a critical risk that organizations of every size must take seriously.
From a phishing email that slips past filters to ransomware attacks that lock down entire business systems, incidents occur in various degrees of severity. A strong incident response plan helps you prevent IT downtime, reputation damage, loss of customer trust, and ultimately, revenue.
The PIH Health ransomware attack in 2024 put the American healthcare provider through a prolonged episode of recovery. Forensic investigation took over a year to complete, with breach notifications only reaching affected individuals in February 2026. The attack took down systems across multiple hospitals and care facilities, forcing staff to record patient data manually while phone lines went dark.
This article will provide tips on how to create an incident response plan (IRP) that could determine whether an incident becomes a contained setback or a prolonged crisis.
A Cybersecurity Incident Response Plan (IRP) is a documented, organization-wide strategy that defines how your team detects, responds to, and recovers from security incidents. It strengthens your posture against attacks by addressing critical questions:
1. Who’s in charge?
An incident response plan defines who is in charge and what each person’s responsibilities are during a crisis. Without this clear assignment, attempts to control the situation will quickly fall apart.
2. What counts as a “security incident”?
An IRP clearly defines what constitutes a harmful incident. If real threats aren’t separated from false positives, you’ll waste precious resources and time on ineffective actions.
3. Who needs to know, and when?
A solid communication plan ensures the right people are informed fast, both inside and outside the organization. That includes execs, staff, customers, and sometimes regulators or law enforcement.
4. How do we handle the crisis and prevent further damage?
An IRP determines your strategy for resolving a crisis and guarding against further damage. Documenting details and analyzing incident details position you for a safer recovery, improving your defenses for the next incident.
With a wide array of security strategies available, incident response planning can quickly overwhelm IT leaders and cybersecurity analysts. However, there is a methodical way of going about it.
The National Institute of Standards and Technology (NIST) offers one of the most widely adopted frameworks for incident response. Its four phases present an organized, intuitive, and robust way to develop an IRP for organizations of all sizes.
When an incident hits, you don't want your team to make foundational decisions under pressure. Those decisions should already be made.
Start your incident response plan with an asset inventory. Document every network, server, endpoint, and application your organization runs. Classify them by criticality:
• Which systems are business operations critical?
• Which databases hold sensitive or regulated data?
• Which systems and networks hold the highest priority?
From there, establish your monitoring baseline. You can't detect anomalies if you don't know what normal looks like. Set up logging across your environment and define what constitutes standard behavior for your critical systems.
Then build your playbook. For common incident types such as ransomware, phishing, and DDoS, document step-by-step response procedures. Your playbook should include who is responsible for what, escalation paths, and communication protocols.
This phase is about recognizing that something is wrong and understanding what you're actually dealing with.
Detection draws from multiple data sources: SIEM alerts, EDR telemetry, firewall logs, threat intelligence feeds, and even reports from employees or external parties. You're looking for two things:
• Precursors: Signs that an incident may be coming
• Indicators: Evidence that an attack is actively happening or has already occurred
In the analysis step, correlate events across systems against your established baseline to confirm whether you have a genuine incident. Best practices throughout this phase:
• Document everything in real time
• Record timestamps, affected networks, and observed system behaviors
• Form a chain of events that spans pre- and post-incident
Once you've confirmed an incident and understand its scope, you move into active response with 3 key parts:
Containment
The goal is to stop the bleeding before it gets worse. Your containment strategy will vary depending on the incident type and its potential damage. In some cases, you might opt for a short-term workaround to maintain system continuity while neutralizing the threat. However, when the situation is critical (e.g., a rapidly spreading malware virus), immediate isolation is your best option. Identifying the attack source during this phase also helps anticipate secondary vectors.
Eradication
Remove every trace of the threat from your environment. This means identifying all affected hosts, removing malware, patching the exploited vulnerabilities, and resetting any compromised credentials.
Be careful not to rush this step. Incomplete eradication is one of the most common reasons organizations get re-compromised.
Recovery
Once the threats have been dealt with, you can restore normal operations. Bring systems back online in a controlled sequence, starting with the most critical services.
Stay alert during this phase. It's essential to monitor systems closely after restoration. Attackers sometimes leave backdoors specifically to reestablish access after you think the threat has been cleared.
This is the phase most teams skip when they think the trouble is over. However, ignoring this phase means you’ll miss out on improving your incident response plan.
Schedule the post-incident review promptly while the details are still fresh. Work through the core questions:
• Did the team follow established procedures? Were those procedures sufficient?
• What information did we need sooner, and how do we get it faster next time?
• Did any response actions cause unintended damage or delay recovery?
Document your findings formally and use them to update your playbooks, detection rules, and preparation materials. The NIST framework is explicitly cyclical, with post-incident findings feeding directly back into Phase 1. Lastly, does the incident involve regulated data? If yes, you may need to notify particular authorities about the breach, as mandated by your industry laws and compliance frameworks.
A documented IRP is only a starting point. Its real value comes from testing and updating it after each incident to ensure that your team is ready to execute its IRP when the stakes are real.
That’s where many organizations stall.
All Covered helps organizations build a plan start-to-finish, from documentation to operational readiness.
If you’re ready to learn more, explore our eBook, How to Survive a Cybersecurity Attack, or connect with our team directly for a consultation.